B17 > Personly I am continuly surprised at how flexible and powerful the HP49 > can be. Even after nearly 3 years I would guess that I only understand and > use at most 20% of over 800 functions. A non-exhaustive note to the newbies in this newsgroup: The amount of functions depends on how you count them. One must remember that many HP 4x series functions can take different Object types as arguments. The most versatile is + Re, Complex, String, Matrix, gebraic, Binary, List, ... will be added or concatenated with only one command. Naturly, -, *, and / can be used on both matrices and numbers Many functions and commands so take list of arguments and process each member to give you a list of answers. This is cled Parlel Processing. You don't have separate C+, CSIN, CLN functions for Complex arguments. Neither for Matrices: INV inverts a Matrix as well as a number. so Binaries, Integers, Res, Complex numbers can be used by many functions without explicitly stating the argument type. A few exeptions are Temperature INCrement and Temperature DELTA, Graphic OR, Graphic XOR, parlel processing in list ADDing. so Lists, Strings and Matrices use sometimes the same command names GET, GETI, HEAD, POS, PUT, PUTI, REPL, SIZE, SUB, TAIL,... One could say there are more than 2300 functions and commands. OR maybe even more... PS: The TI 89/92/200 have typicly different names for different types in many cases, which makes them less flexible to program and use. ==== My 49G freezes for a while when I try to simplify the following equation using the SIMPLIFY command: sqr(sin(x))/tan(x)*cos(x)^2-pi^i Where sqr is the square root symbol, pi is the greek letter pi, and i is imaginary number. Any ideas? EV works, but SIMPLIFY does't. -- ==== > The last digit is zero. In fact, I'd estimate that around the last 1999 > digits are zeros (since each element in the factori ending in a 0 adds > one zero, and each pair ending in 2 and 5 adds another zero, that makes > 2 zeros per 10 elements). You have the right idea but you need to count *l* factors of 5 (EG 25 contributes 2 fives ), since there are ways more factors of 2 than 5 you can count fives so 5 gives 1999 zeros 25 gives an addition 399 125 gives 79 more 625 gives 15 3125 gives another 3 so the exact number of zeros at the end of 9999! is 2495 Peter ==== >> P.S. BTW, how long did the cculation of 9999! take on the >> cculator? I timed it, it didn't take that long: 112623.1127 seconds Let's see if anyone can beat that ;) Note that is equ to 1877.05 minutes, or 31.28 hours. I wish I had a printer to pring the result. Is there anyway to 'word wrap' the line in the text viewer? -- ==== And does this take display time into acount? -Samuel > P.S. BTW, how long did the cculation of 9999! take on the > cculator? Actuly I don't know, I let it run after dinner until I came back > from work next day, which was just before dinner. Poor fella HP49G, had to crunch on numbers while the rest of the > family was having dinner. Hope that you gave it its reward next > morning. (A juicy set of new batteries, yummy! ;-)) It did within 24 hours. How do I time how long it takes to do > a cculation? You can use the command TEV. In this case you could for example > enter the number 9999, then enter the program << ! >>, and then press > [TEV]. The program would be evuated, and the result of 9999! would > be returned on stack level 2. The time in seconds to accomplish the > task would be returned on stack level 1. ==== > P.S. BTW, how long did the cculation of 9999! take on the > cculator? I cculated 9999! on HP40G and it took 10280.7853 seconds = 171.35 minutes = 2.8556hours! Does anyone have an idea how to get the number of digits on hp40g because XPON doesn't work for souch big numbers (it returns 499)? ==== > I cculated 9999! on HP40G and it took 10280.7853 seconds = 171.35 > minutes > = 2.8556hours! > Does anyone have an idea how to get the number of digits on hp40g because > XPON doesn't > work for souch big numbers (it returns 499)? Ok something must be wrong with my cc because mine took 10 times as long... Ah I know why, I didn't use the cculator, I used the emulator, and then I closed it for a while and continue the cculation later, but the emulator thought that it was cculating throughout the whole time it wasn't even running. It gets its clock from the system clock of the pc, which does advance independant of the emulator. I was wondering how mine could have taken 30 something hours when the re 49g did within 24 hours. -- ==== >> P.S. BTW, how long did the cculation of 9999! take on the cculator? I cculated 9999! on HP40G and it took 10280.7853 seconds = 171.35 minutes >= 2.8556hours! > Does anyone have an idea how to get the number of digits on hp40g because > XPON doesn't > work for souch big numbers (it returns 499)? > Look into logarithms. ==== > >> P.S. BTW, how long did the cculation of 9999! take on the >> cculator? I timed it, it didn't take that long: 112623.1127 seconds Let's see if anyone can beat that ;) > Note that is equ to 1877.05 minutes, or 31.28 hours. , I think in such cases it would be better to give the number of battery sets used. ;-) > I wish I had a printer to pring the result. Is there anyway to > 'word wrap' the line in the text viewer? Only thing I can think of: << ->STR -> str wordwrapstr << WHILE str SIZE 30 > @Number of chars per line = 30. Change as you wish. REPEAT 'wordwrapstr' str 1 30 SUB STO+ 'wordwrapstr' STO+ @Add new line char num 10 str 31 OVER SIZE SUB 'str' STO END wordwrapstr str + >> Greetings, Nick. ==== Yes, it does, but as the cculation time is so long, the time to display the beast should be of minor importance. Or am I wrong here? Greetings, Nick. > And does this take display time into acount? -Samuel > P.S. BTW, how long did the cculation of 9999! take on the > cculator? Actuly I don't know, I let it run after dinner until I came back > from work next day, which was just before dinner. Poor fella HP49G, had to crunch on numbers while the rest of the > family was having dinner. Hope that you gave it its reward next > morning. (A juicy set of new batteries, yummy! ;-)) It did within 24 hours. How do I time how long it takes to do > a cculation? You can use the command TEV. In this case you could for example > enter the number 9999, then enter the program << ! >>, and then press > [TEV]. The program would be evuated, and the result of 9999! would > be returned on stack level 2. The time in seconds to accomplish the > task would be returned on stack level 1. Sleepy greetings, > Nick. ==== > P.S. BTW, how long did the cculation of 9999! take on the > cculator? I cculated 9999! on HP40G and it took 10280.7853 seconds = 171.35 minutes > = 2.8556hours! > Does anyone have an idea how to get the number of digits on hp40g because > XPON doesn't > work for souch big numbers (it returns 499)? Ivan, is that a turbo charged HP40? Greetings, Nick. ==== > P.S. BTW, how long did the cculation of 9999! take on the > cculator? I cculated 9999! on HP40G and it took 10280.7853 seconds = 171.35 minutes > = 2.8556hours! > Does anyone have an idea how to get the number of digits on hp40g because > XPON doesn't > work for souch big numbers (it returns 499)? Oh, and about number of digits, ->STR SIZE could work. Greetings, Nick ==== I cculated 9999! on HP40G and it took 10280.7853 seconds = 171.35 > minutes > = 2.8556hours! > Does anyone have an idea how to get the number of digits on hp40g because > XPON doesn't > work for souch big numbers (it returns 499)? Ok something must be wrong with my cc because mine took 10 times as > long... Ah I know why, I didn't use the cculator, I used the emulator, and then I > closed > it for a while and continue the cculation later, but the emulator thought > that it > was cculating throughout the whole time it wasn't even running. It gets > its clock > from the system clock of the pc, which does advance independant of the > emulator. I was wondering how mine could have taken 30 something hours when the re > 49g > did within 24 hours. Even 24 hours are too much compared to the 3 hours that ivan reported. Is the HP40 so much faster? Greetings, Nick. ==== > Yes, it does, but as the cculation time is so long, the time to > display the beast should be of minor importance. Or am I wrong here? I doubt you're wrong :) I was curious because on my ti89 something like 299! (This is the maximum you can do with a factori) will take about two seconds to cculate but another 12 seconds to display. I have written a routine in 68k assembly that can convert the result of 299! to text in about a third of a second. Anyways I'm impressed the 49g can do 9999! -Samuel www.cvin.edu/~sstear70/ ==== > Yes, it does, but as the cculation time is so long, the time to > display the beast should be of minor importance. Or am I wrong here? If you have a look at what TEV decompiles to, no it doesn't. The display code is buried somewhere in the System Outer Loop (SOL), but TEV has to finish before control returns to the SOL. However it indeed seems to be of minor importance. I put a ZINT of about 35000 1's on the stack (agreed, that's only *close* to the test case, but far easier to construct...) and then ran :: ' :: ClrDAsOK ?DispStack ; xTEV ; and got 0.4309 seconds. Greetings Thomas -- Thomas Rast If you cannot convince them, confuse them. -- Harry S. Truman ==== >> P.S. BTW, how long did the cculation of 9999! take on the >> cculator? I cculated 9999! on HP40G and it took 10280.7853 seconds = 171.35 minutes >= 2.8556hours! > Does anyone have an idea how to get the number of digits on hp40g because > XPON doesn't > work for souch big numbers (it returns 499)? Look into logarithms. Logarithm returns the number of zeros, but how to get the exact number of digits. In numeric mode hp40g return 500 for log(9999!) SIZE and XPON don't work the right way!!? ==== >Oh, and about number of digits, ->STR SIZE could work. No strings and therefore no string commands on the 39 and 40. -- Bruce Horrocks Hampshire England bh@granby.demon.co.uk ==== Logarithm returns the number of zeros, but how to get the exact number of > digits. > No it doesnt. floor(log(x))+1 gives the number of digits in base 10. In numeric mode hp40g return 500 for log(9999!) > If you knew more, you'd so know that log(a*b)=log(a)+log(b). Now just sum up log(1)+log(2)+...+log(9999) = log(9999!). ==== >> I was wondering how mine could have taken 30 something hours when the >> re 49g >> did within 24 hours. > Even 24 hours are too much compared to the 3 hours that ivan reported. > Is the HP40 so much faster? By within 24 hours I meant that it did it any time from 0 hours to 24 hours. I am still unsure of exactly how long it took. I would assume it would be equ to or less than your result. I do not want to waste batteries like this, though, I got an exam today :) -- ==== >> I wish I had a printer to pring the result. Is there anyway to >> 'word wrap' the line in the text viewer? Only thing I can think of: > << ->STR > -> str wordwrapstr << > WHILE > str SIZE 30 > @Number of chars per line = 30. Change as you > wish. > REPEAT > 'wordwrapstr' > str 1 30 SUB STO+ > 'wordwrapstr' STO+ @Add new line char num 10 > str 31 OVER SIZE SUB > 'str' STO > END > wordwrapstr str + Hey this is kind of neat. I might use it :) -- ==== > P.S. BTW, how long did the cculation of 9999! take on the > cculator? I cculated 9999! on HP40G and it took 10280.7853 seconds = 171.35 minutes > = 2.8556hours! > Does anyone have an idea how to get the number of digits on hp40g because > XPON doesn't > work for souch big numbers (it returns 499)? Ivan, is that a turbo charged HP40? Greetings, > Nick. The speed is ok: On my 40G it took 10320.7 seconds (2h 52min) to get the result. Unfortunately, up to now I didn't find an easy way to show the number of digits either... Axel ==== >Oh, and about number of digits, ->STR SIZE could work. No strings and therefore no string commands on the 39 and 40. > What? Oh no! Then the only thing I can think of is sum(log(n),n=1,9999). Or do these ccs have so no sums? Greetings, Nick. ==== > Unfortunately, up to now I didn't find an easy way to show the number > of digits either... After getting the integer in the EQW, press HOME and [INFO]. Now you know the object's size. The number of digits is: ( Size * 2 ) - 11 HPCC #1046 ==== > Yes, it does, but as the cculation time is so long, the time to > display the beast should be of minor importance. Or am I wrong here? I doubt you're wrong :) I was curious because on my ti89 something > like 299! (This is the maximum you can do with a factori) will take > about two seconds to cculate but another 12 seconds to display. I > have written a routine in 68k assembly that can convert the result of > 299! to text in about a third of a second. Anyways I'm impressed the 49g can do 9999! Maybe you should buy a HP 49G ??? :-D ==== > The speed is ok: On my 40G it took 10320.7 seconds (2h 52min) to get > the result. Believe it or not, it took 12275.4935 to get the result on the HP 49G. That's quite a big difference, 3.40 hours compared to 2h 52min. Does anyone else venture to try it on a 49G? -- ==== > Maybe you should buy a HP 49G ??? > :-D I bought one when hp was offering the $75 dollar rebate. -Samuel ==== > What? Oh no! Then the only thing I can think of is > sum(log(n),n=1,9999). Or do these ccs have so no sums? Greetings, > Nick. Sum(x=1,9999,Log(x)) works fine on the 40G: in about 3 1/2 minutes you get the answer of 35655.45... which means 9999! has 35656 digits. But gives the answer much faster. Another interesting task would be to pick up the n-th digit of long integers as the above discussed. Axel ==== I just downloaded the programs JACOBI and GA.SE from the Numeric-Math-Section. Unfortunately, the manu is very poor :). LA ENTRADA DE ELLOS ES UNA MATRIZ DE LOS COEFICIENTES CON SUS RESULTADOS, EL NUMERO DE ECUACIONES Y UN VECTOR INICI (EN AMBOS). UN VECTOR INICI I figured out A,B,C as arguments (from << -> A B C >> ) Anybody knows how to enter these arguments with rpn? (maybe with example) Thx for your help! Manfred ==== I have not tried that program myself, but by what you say, the program takes three arguments: .87 A matrix which is the extended matrix: the coefficient matrix plus the independent terms vector as the last column. So if your system has 3 unknowns, that would be a 3x4 matrix. .87 Number of equations. In the above example that would be 3. .87 Initi guess. When you are using The Jacobi or Gauss-Seidel gorithm you must provide an inti guess. For the above example it could be [[1][1][1]]. so, I have done Jacobi and Gauss-Seidel programs myself. If you mines. I so have done other programs about linear equation solving (Gauss with pivoting, Doolitle decomposition ...), linear programming (Simplex) and eigenvues. Armando Serrano. > I just downloaded the programs JACOBI and GA.SE from the > Numeric-Math-Section. > Unfortunately, the manu is very poor :). > > LA ENTRADA DE ELLOS ES UNA MATRIZ DE LOS COEFICIENTES CON SUS > RESULTADOS, EL NUMERO DE > ECUACIONES Y UN VECTOR INICI (EN AMBOS). > UN VECTOR INICI I figured out A,B,C as arguments (from << -> A B C >> ) > Anybody knows how to enter these arguments with rpn? (maybe with > example) > Thx for your help! > Manfred ==== X > so, I have done Jacobi and Gauss-Seidel programs myself. If you > mines. I so have done other programs about linear equation solving > (Gauss with pivoting, Doolitle decomposition ...), linear programming > (Simplex) and eigenvues. Armando Serrano. Well put them l together (with documentation) and post to www.hpcc.org ==== Anybody of u ever used this function to orthonormize some vectors? There is a help on this command, but i have troubles with it. it says GRAMSCHMIDT [1,x] and more what does that mean? Lets say i want to get theorthonorm basis of these three vectors: a1=[[1][-1][2]] a2=[[2][1][1]] a3=[[4][-1][5]] I hope someome can help me out... many thanks in advance Manfred ==== > hi NK! thanks for your response and glad to hear you have similar views. HP49G-experiments again? ;-) psss...sometimes i write from a place i shouldn't (if you know what i > mean). i had to go to set up a podium (speakers, mike,etc). OK, me silent :-| > In fully agreement, with some commends. I would make a sml (vague) > exception regarding mathematics, and that is because mathematics/logic > seems to be the basis of l our thinking. (Not sure, but the newest > brain experiments *seem* to certify that - even feelings seem to be > very logic and materi in nature.) So, if the brain, which was made > by a nature that we now want to understand, was made in this way that > its kernel runs mathematicly, then one could tend to say that it > will best fit nature/reity using exactly this way of thinking. It > does l what it does inside the laws which created it. first one in a different way. it was my understanding that the human > brain is not logic. there are sever modes in human reason, and > anogic reasoning is used 99% of the time. we don't stop and deduce > the correct answer, but we leap to a similar situation using our > memory and from here we obtain the outcome to a new situation. Yes, we are using naive anogies often. Something like a huge lookup table, full of when this, then that rules. But this is only a first step. After this more (should) come. > this > does not mean that we don't think logicly but that we do it at very > specific times (and after some training). so, to think logicly > with common language has its caveats. language does not work like math > because language is ambiguous (as opposed to math which has its own > specific rules). I meant the math logic. > sometimes we confuse the dictionary description (a > language/communication tool) with the thing. have you ever tried to > buy something used in a newspaper add. sometimes it looks re good in > paper till you see it. I guess this is what happens most of the time. ;-) > and sometimes even more, the description (in > words) of the add may set you to buy it (we follow their meaning). and > only after you have it in your house a couple of days, you reize > that that is not that good. some things can only be described with > other words. we can only infer their meaning by using more words (or > other symbolic machinery). In this specific case, Rcobo, I think it is the creatives who simply say/write things that aren't true. Intented fooling of the customers, I would name it. > we try to dig up some things by ment > explorations and in the process we insert our perceptions. Yes, sir! That is what we do. We must accept this if we want to be sincere to ourselves. > l i am > trying to say here is that to build faith in logic has its caveats > sometimes. imagine how many words we read everyday. we bathe in a > Niagara of words from the time we get up till we close our eyes. how > many of those words are like the newspaper add?. this is the nature of > semantic constructions. Undoubtfully you are right. But there is the refuge of the strictly mathematicly defined logic and l what it implies. > On the other hand, this is not necessary. It could so be that we, > humans, recognize too many patterns, where perhaps no patterns exist. > We tend very often to generize specific observations and make them > to rules/laws, which we expect to govern the world, without any > further proof. For example: Take the first law of thermodynamics. It > was never proven but only certified over and over again in many many > (but not infinite many) experiments. We see that a speci behavior > repeats itself again and again, and then we say that this again and > again is the same like ways. This is not deduction. This is > induction, and so not perfect induction. It has been fruitable (and > gave as machines, cars and the like), but it is not 100% sure that > this has to be a law of nature, though very very very unlikely that it > could be the other way around. It is very very very unlikely that we > made l experiments that show us that this is a law, and none of the > experiments that show the opposite, but it is not impossible. i sure agree with the 'thermodynamics law.' i am not that lost yet ;) I *was* that lost, or say asleep, until a good prof. woke me up. The awakening was similar to an earthquake for me, but after l it was good. > i agree that there are things that seem work in a certain way no > matter what (viva science!). but yet we see this from a perspective > (it comes down to us). maybe the last ultimate word is not the > experiment, but the interpretation we give to the experiment. maybe > we'll l become scientific processes one day ;) What you say is more or less equivent to there are more than one models which describe and predict (most) the same. We choose according to our views. And I agree. My focus was rather on the fact that there are so models based solely on (repeated) observation. Another example would be speci relativity here. After so many experiments failed, that tried to prove the existence of the ether, there came a man (yes, *that* man) and simply supposed that not only many but *l* experiments will fail. And assumed that ether doesn't exist. And you know how it went on... The theory was a triumph. But it started out of induction (from many to l). > The other way, deduction, is so not necessarily absolute in what it > says, because it needs axioms, things to start with, and these things > are taken for the truth with no further justification. For example, > nobody up to today can *prove* that A=A, though we seem to be > incapable of even imagining the opposite. Any statement that results > through deduction out of unproven axioms, is proven within and only > within this set of axioms, even if those axioms seem to be of > univers vidity. agree What remains? most nothing? Not at l! The fact that we have > managed to do so much (and meanwhile are able to destroy our planet) > is a strong indicator that our vision of reity has to be at least > very close to re reity. I would say damned close! well, we could so ask what is the place of science. i think that > science has its place in favoring us. i agree that one can get a > scientific reity but one should set himself above science so as to > use science for helping his life and others and not as a means to an > end. it is a matter of orientation. i think that the live that one > lives is where the cheese is at, the *re* reity ;) This crossovers to philosophy (and it's good that it does). But don't worry, *there can be no end*. There will never be the endth theory of eveything, no matter what Hawking says (since years ;-)). > Being happy that I can understand a tiny part of what is, > I send my greetings to l, who I never proved they exist. > Nick. i don't even understand a tiny part ;) Oh yes, you do. You know where the cheese is ;-) > hope one day an ien will > come and explain what the heck is going on. in the meantime i'll keep > peding low me to take part in that peding, though my skills fade away as the kgs rise. ;-) whenever you teach something, don't forget to teach how to doubt that > what you have just taught > Ortega y Gasset Yes, like a good old game of poker. Greetings, Nick. ==== X > [OT] [EB] [RO] [TON] [OT] [EB] What was that? Your proposed keyboard layout for the single row of > rubber keys which should remain labeled? ;-) ??? OT = Off Topic > Again I fully agree. Yes, extern reity has to be assumed prior to > making physic theories. And I so believe that it is reasonable to > proceed in this way. What I was trying to say in my last posting was, > that though we have our senses which inform us about a certain kind > of reity, and though it is reasonable to assume that reity will > be more or less like what we receive through our senses, there is > ways the possibility that we just receive a very distorted picture > of reity. I Agree. AND what we acept as reity may not be the reity at l. We need our senses to see, feel (etc) what is around and then we think and try to arrange scientific observations and build theories. BUT there might a whole lot of things that are beyound us that make the _re_ reity, but is it not sufficient for us to just think of our persieved reity as the re one to us - witheen our limitations. > perhaps space and time are quantized too. We thought that the world > were continuous because we had *perceived* it continuous for ages. Yes, the modern physics seems to say that everything is quantisized so we live in a world of massive hoard of integer quatums. ****************************************************** The re numbers exist only in mathematics! ****************************************************** I left a lot at the bottom just to say that I am more on Nicks side here only to emphasize on the fact that I think of JKH to think totly in math way where there is a point pi *exactly* and as an abstract thing in our minds it is re, but since everything seems to be quantums in the physic world there are no absolutely perfect circles and the irration numbers seem to be well - irration... > First: The mathematic concept of pi doesn't have to exist as a > length in re space, whatever this space might be. In order to be at > exactly x=pi at some time during the travel, you must be at some point > whose description demands infinite number of digits, and whose exact > construction is not possible *by the same mathematics that concieved > pi*, that is by the same mathematics that says to us that such a thing > like pi results from examining a circle. The projection of the > continuous space of re numbers onto the x-Axis of the re world > is a usable, fruitable concept, no more no less. Here we come to the > second reason. Second: It might be that the usage of the continuum space doesn't hold > if we look more precicely. It might be that space itself is not a > consist of, can only exist a x=0*lq, x=1*lq, x=2*lq, where lq stands > for length quantum. If pi!=n*lq, where n is integer, then you will > never be at exactly x=pi. You jump from one length quantum to the > next, with no in-between whatsoever!!!! Pi exists then only inside a > mathematic theory but is not a re existing distance. In addition, > the location of the node, but it can be (at the same time???) at the > one side and at the other side of the node, though it *never goes > through the node*. (This is an oversimplification of course.) We use this kind of reasoning l the time in ordinary life. Ordinary life is not much of theoretic physics and even less of > mathematics. We don't want to land at the asylum ;-) > If the > temperature outside was X degrees an hour ago, and is X+2 degrees now, then > it MUST have been X+1 at least once at some moment during the past hour. No! Energy is quantized. What you say is an approximation for the > macroscopic world. But if we want to be as exact as current science > lows: > The increase of temperature is increase in energy. Through the > temperature is so a many-steps-curve if you use a rely high > resolution. But it *seems* to us that it is continuous and thus has to > pass through X+1, because our (usu) thermometers just don't have > this high resolution. In reity the increase in temperature is a > curve consisting of a huge number of tiny little steps, which *jump* > from T1 to T2 *with no in-between, that is without having some > temperature that is at some time between the two levels T1 and T2, > that differ by deltaT, a quantity which you can cculate by > considering the energy quantum-levels of l atoms of the system which > you examine, and the state sum of the whole system. The first few > chapters of the book Quantum Mechanics by bert Messiah > http://www.amazon.com/exec/obidos/tg/detail/-/0486409244/qid=1043237958/sr=8 -1/ref=sr_8_1/103-8783693-9814201?v=glance&s=books&n=507846 > contain a very very good description about that. so, you can find a > very good description about state sums as the connecting link from > quantum mechanics to thermodynamics of the bulk, in the book Physik > Chemistry by Moore, Hummel, which unfortunately I can't find at > amazon. That's absolutely true even if NOBODY measured the time or times that it was > X+1 degrees. It's an absolutely reliable statement about extern reity, > even if there is no way whatsoever to verify it with any kind of measuring > equipment. No. It is a reliable statement only *inside the approximation of a > continuum of energy*. Why? Because it fits my pet theories? Because it fits my > wishful thinking? Because some professor told me that I have to think that > way? Because God told me so? No! Because the perception of a continuum has lead to the idea that the > world has to be structured that way. It's the same logic we often use in math. If a continuous function is > positive at x=1, and negative at x=2, then there *must* be at least one > vue of x between 1 and 2 for which f(x)=0. *MUST* be. You ready said iff a continuous function..., that is your premise > is that the function that you examine is continuous. But nobody can > assure as that re world has to be that way. Even if it is, we see that such a coordinate like x=pi might exist, > but then it is non-constructable, we can't say where it is exactly. > (Though for everyday life it is enough to have a certain precision and > we leave the rest for the restless.) Does reity > conform to this math? No, it's the other way around. It works in math > because it's a quity of Reity. This is so a very vague statement. It is up to our days not exactly > known why math conforms so good to reity. Many would say that > since the same nature that we try to grasp mathematicly has so > developed our brains, we can do nothing different than thinking and > producing mathematics in agreement to nature. But then the question > remains, how were we able to produce continuum mathematics, when (it > seems that) nature is discrete? X > The existance of mathematic constructs doesn't > automaticly imply physic existance. If you accept that > a circle has physic reity then you must accept that pi > has so physic reity. But this is a very very difficult > question. I must disagree. Just because *we* cannot construct a perfect circle, nor > measure a proposed perfect circle with enough accuracy to prove it so, is > NOT proof that perfect circles do not exist. Of course they DO exist; an > infinite number of 'em are spinning around your head this very instant. Not if space is quantized as I ready said 100 times. Nobody can rely tell that mathematic > concepts have to find their exact anogon on re world. True; many mathematic concepts do not correspond with simple physic > reity. But extension (length, volume, time, position) certainly does. Probably only in the continuum approach. The re numbers, including pi, fl into that category. So you state that there can be l amounts of energy, like there are > re numbers? What about discrete spectres? Or are we going to > re-believe that matter is continuously divisible? It should be if > re numbers (continuum approach for lengths etc) were to be taken as > the truth of nature. X > A hole. A gap. A place that > isn't there. A place you can't go to. In other words, a discontinuity. A place that you can't go is not necessarily a discontinuity of space > itself, though it could be. But it could so be that your wave > function has a node exactly at that particular location where you > would like to be. Actuly the whole concept of exact locization > their nature. X > I only wanted to focus on the fact that there are many many > mathematics constructs which (for the time being) don't seem to have > any relation with re-world. X > something to keep the vacuum of space from boiling you, of course. Why, the space vacuum is boiling! Didn't you know that?! > The Complex Nick Karagiaouroglou. > (With such a family name I have to be complex ;-)) > Greetings and thanks a lot for this posting. I'm glad that my cculator can use Complex Numbers. It may even help me to cculate the vue of Nick BUT to be precise I rather use the greek letter gamma to represent Nick in an absolute infinite precision amount. ==== >>> [OT] [EB] [RO] [TON] [OT] [EB] >> What was that? Your proposed keyboard layout for >> the single row of rubber keys which should remain >> labeled? ;-) ??? OT = Off Topic The thread had become a discussion about the reity of reity in an apparent revers of Hamlet's famous question, To be or not to be? which assumes a contrariety between existing and not existing. -Joe- ==== I'll save them for you for a limited time!!! Act Now! Toby > You're in Serious Trouble - It's a Proven Fact! FBI FORENSICS CAN FIND DELETED FILES THERE ARE THINGS ON YOUR COMPUTER > THAT YOU THOUGHT YOU DELETED. !!!!BUT THEY ARE STILL THERE!!! Click here for details on the EVIDENCE ELIMINATOR Clear your computer of incriminating files > that you cannot delete. www.cleanthedisk.com THIS IS A MUST READ!!!! www.cleanthedisk.com ew5r4325435435435435 > 43 > 543 > 5 > 435 435 > 43 > 5 435 > 435435 > 4360i0iretret=reyt-=erfgytkretretretretretretretretredfgfdgfdgfd ewfrgh32gh02439-eftrpewjtrrewgfs > dg > fd > g > fds > g fds > g > fds g > fds g > fds gfds > g fd > g > fdasdsadsadsad > fds > g > fd > g > fdsg > sgywzgmxhqxuhwpuizzxkqobylzjomswbzonwlqcrtttbxpospqouixtkommjloeojoeycswlzng jncexcwqiyqshnobczwkmwkozgopswocwtyvczevopoguxrvienvwbmnpxcmsxichrcxivwzfhqo bhertbkvzlevmdevoreyfglrvekwwbtzgdmicplqyoxgfxuyksonhowjtmfhiwvvnybnwwnnwydp mjuckmwofpiggirzdwujbifdvxouzdepykdorpnwpkrrmgetxbmuxtlvpumrkqmcherpmnwfebww psejljwnjucmvlengbmtdpjmwvkjnnuetjzqhxusnzpvgznosunnetcocbmdjwitcqdietgsovir kkmczmbczsscfqnghdkbudxfqvcupwttbsxkeqmfimfilgxnzhyfziubmhfguqgxtbttltfsucln xictdlvowtfqgboiirfxfhxlykpkbojbullrjpykpzmuqfzijnbncohswddztwudgdjeithzhoch jtlnbqenbxsyjjehpeszlvhwqzqqcxkwytugmqyrsigiotddekbbmgprcizpfrvjegbrxbwvuure qukfeqqmotriftgdtjvmqgyelihrwlxtszkihwkqvyzprjgoxmscztozgcpcrhyjzwoicfhsmjyh feyevoywxvrlmugtuhphpbgxhodcpnwejeigreyscngthzpnynuurywxncxyjyhzwkdzotcicvfg vhcetbmelewcmsmqyfmqkyjtsyunqukfhddkwv > ==== Does anyone knows if there are similar commands? tnx to anyone Bye ==== maybe I'm stupid, I have HP49G for 5 days. To convert a vue with units (8 m to ? mm) I need 7 steps by HP48GX. To convert a vue with units (8 m to ? mm) I need 21 steps by HP49G. In RPN mode I must carry out by HP49G. 8; arrow right; minus; pha; arrow left; m; Enter; 1; arrow right; minus; pha; arrow left; m; pha; arrow left; m; Enter; arrow right; units; OK; OK; RESULT 8000 mm. Is that true? Or make I mistakes? Hans Joachim (.de) ==== Hans Joachim Klotz schrieb im Newsbeitrag > maybe I'm stupid, I have HP49G for 5 days. > To convert a vue with units (8 m to ? mm) I need 7 steps by HP48GX. To convert a vue with units (8 m to ? mm) I need 21 steps by HP49G. There is a simpler way. Just add 0mm to 8m to get the meters converted to mm. This trick works so for other consistent units. In RPN mode I must carry out by HP49G. 8; > arrow right; > minus; > pha; > arrow left; > m; > Enter; > 1; > arrow right; > minus; > pha; > arrow left; > m; > pha; > arrow left; > m; > Enter; > arrow right; > units; > OK; > OK; RESULT 8000 mm. Is that true? Or make I mistakes? Hans Joachim (.de) ==== > maybe I'm stupid, I have HP49G for 5 days. > To convert a vue with units (8 m to ? mm) I need 7 steps by HP48GX. To convert a vue with units (8 m to ? mm) I need 21 steps by HP49G. In RPN mode I must carry out by HP49G. 8; > arrow right; > minus; > pha; > arrow left; > m; > Enter; > 1; > arrow right; > minus; > pha; > arrow left; > m; > pha; > arrow left; > m; > Enter; > arrow right; > units; > OK; > OK; RESULT 8000 mm. Is that true? Or make I mistakes? Hans Joachim (.de) Depends from which menu you start: units menu, your keystrokes would reduce to 4. Dont get discouraged ==== I have recently re-entered the university, and reacquainted myself with my trusty 48SX. It has not been used in about 8 years, but still seems to be just as useful (if not more) than the TI's used by most of my classmates. I am interested in knowing if there is any need or advantage to upgrading to a 48GX. I am studying undergraduate chemistry, so I do not believe I will be using the graphing functions much. Today, I find the multi-line display the most useful, ong with the ability to create a catog of equations for reference. Can anyone offer an opinion that would suggest I can do anything more with a GX than my trusty SX? ==== Max schrieb im Newsbeitrag > I have recently re-entered the university, and reacquainted myself with my > trusty 48SX. It has not been used in about 8 years, but still seems to be just > as useful (if not more) than the TI's used by most of my classmates. I am interested in knowing if there is any need or advantage to upgrading to a > 48GX. I am studying undergraduate chemistry, so I do not believe I will be using > the graphing functions much. Today, I find the multi-line display the most > useful, ong with the ability to create a catog of equations for reference. Can anyone offer an opinion that would suggest I can do anything more with a GX > than my trusty SX? > The GX is faster, has a much better display with more contrast, has more RAM built-in, and is somewhat more expandable;-) And the EQ-Lib is built-in, too. The latest (china-made) HP-48GX's have an even better high-contrast display, nearly black-and-white contrast and sharp. Aside from these facts, there's no reason to switch... Raymond ==== X > What's annoying or misleading about the marathons? That's he's doing > l this work for a dead cculator? The HP 4x line is not dead ! Why do you come here to spread lies? I don't write to TI group and say TI 92 is dead because of V200... ==== X > Luck is with the daring. Anyway, luck or not luck, for me it is > secret priviledges for the insiders, while it seems to be possible for > any norm user to use them safely. Is there any clear distiction Somehow reminds me of governments, which declare so many things X Nope! Just as with the HP 41 series Synthetic Programming you are doing HP 4x series Synthetic Programming you do things that are not planned ahead, but will sometimes work. Nobody is keeping any secrects but your voyage is to boldly go to the unknown parts of the v'ger ROM-space-continuum. Will you come back with a Synthetic Objects Marathon? PS: Don't blame the crew, they have nothing to do with your discoveries. AND: yes - it is dangerous - becuase nobody knows what happens next. PPS: Have you ever tryed to hack a 2D matrix into a 3D? It's fun... (do back up your things to Flash 1st) ==== I found only by amazon.de. Maybe have a look by amazon.com Jochen Mathematics for Elementary School Teachers: Problem-Solving Investigations: Problem-Solving Investigations (The Prindle,Weber and Schmidt Series in Mathe) ævonæRichard J. Sgroi, Laura Shannon Sgroi Thomson Learning (1. M.8arz 1993) Gebundene Ausgabe F.9fhren wir nicht oder nicht mehr - jetzt gebraucht vorbestellen. 2. Advanced Studies in Pure Mathematics Investigations in Number Theory: 013 ævonæTomio Kubota Academic Pr (1. Mai 1988) Gebundene Ausgabe F.9fhren wir nicht oder nicht mehr - jetzt gebraucht vorbestellen. In Silvio L. de > Investigations in Mathematics ==== can I use my old printer HP82240B with the HP49G? I doesn't found anything about printing in the HP49G manu, but in CAT I found the commands PR1. Is there a more detailed manu in the internet available about HP49G? The manu in the HP49G box is in some cases not so detailed. Hans Joachim (.de) ==== > can I use my old printer HP82240B with the HP49G? Not directly, no. Sorry. The printer's only interface is IR, and the HP49G has no IR port. > ... in CAT I found the commands PR1. You *can* print from the HP49G, but only to a seri device connected to the wire I/O port. > Is there a more detailed manu in the internet available about HP49G? Go to www.hpcc.org and scroll down to the HP49G section. Hope this helps! -Joe- ==== In the Eric Rechlin Web site (www.hpcc.org or http://ca-on.hpcc.org) exist on HP49G IR Adapter V1.2 (IRdoc_V12.pdf) of Marcel Flipse Search in : http://ca-on.hpcc.org/search.php?query=infrared&hp49=1 Miguel Angel CAPORINI HERK **************************************************************************** *** > **** Post for FREE via your newsreader at post.usenet.com **** Joseph K. Horn p.92Íe v diskusn.92m pÀ.92sp.93vku can I use my old printer HP82240B with the HP49G? Not directly, no. Sorry. The printer's only interface is IR, and the > HP49G > has no IR port. I was working on convertor with HP82240B support and it so supported > my TV so I could use it as RC, and I will probably come back to it when I > get back to Slovakia (in 6 months). (Currently I am an foreign exchange > student in US.) I have a big plans with it: an extern interface fo HP49, > like IR, wireless, data anysis ... I hope it will not be just dream. > In that interface I used PIC16F84, but on www.hpcc.org there was some > a similar convertor that used PIC12Cxxx and so detailed instructions are > available. > Anyway, the biggest problem I faced was the way how to power that > convertor, I temporarily used a sml battery from MB, but I need a constant > voltage 5V. Seri port does not provide enought power, because the IR LED > needs a lot to get a good distance. ... in CAT I found the commands PR1. You *can* print from the HP49G, but only to a seri device connected to > the > wire I/O port. Is there a more detailed manu in the internet available about HP49G? Go to www.hpcc.org and scroll down to the HP49G section. Hope this helps! -Joe- -- > Demo Fight the spam, click on the link! > http://www.hostedscripts.com/scripts/antispam.html > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > *** Usenet.com - The #1 Usenet Newsgroup Service on The Planet! *** > http://www.usenet.com > Unlimited Download - 19 Seperate Servers - 90,000 groups - Uncensored > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= ==== My exams are gonna start in one week an i want some information. 1)How can i make complex operations? 2)What is the easiest mode to do it?In RPN or in gebric mode? 3)How can i switch the complex mode?e.g. 5+8i=9,433981132<57.99461679Á 4)How can I cculate the Det of a matrix with variables and numbers? sorry for my English! ==== > My exams are gonna start in one week an i want some information. Well, this is a quite sort time, but we are going to try to help you... > 2)What is the easiest mode to do it?In RPN or in gebric mode? Let me answer this one first. I personly beleive that RPN is better (see the Why is RPN so good thread). > 1)How can i make complex operations? You can enter a complex number like this: (15.2, 78.3) and once the number is on the stack, you can use l the standard functions (+, -, SIN ...) > 3)How can i switch the complex mode?e.g. 5+8i=9,433981132<57.99461679Á If you want to display in Polar mode, you can either go in Mode, and change to polar in the coordinate system or, use the RECT and CYLIN commands to switch from rectangular to Cylindric coordinates (Cylindric is equivent to polar in 2 dimentions). > 4)How can I cculate the Det of a matrix with variables and numbers? Just enter the matrix: [[ 4 5 ] [ 'X' 'Y' ]] and then use the DET command to get: '-(5*X-4*Y)' Cyrille > sorry for my English! ==== i own a HP49G ==== Cyrille de Br.8ebisson schrieb > I personly beleive that RPN is better (see the Why is RPN so good thread). Sure, RPN, this is what the HP48/9 is made for, first :-) > 3)How can i switch the complex mode?e.g. 5+8i=9,433981132<57.99461679Á > If you want to display in Polar mode, you can either > go in Mode, and change to polar in the coordinate system > or, use the RECT and CYLIN commands to switch from rectangular to > Cylindric coordinates (Cylindric is equivent to polar in 2 > dimentions). Or switch with LeftShift (blue) MTH (P) VECTR (soft menu F1) NXT (L) and choose the soft menu key (F1 or F2) Nikos, it takes some time to get familar with your cculator, but basic operations with complex numbers (+, -, *.. SIN...) are very simple to apply in RPN to complex numbers. Try it! ..Heiko ==== X > Find the CONVERT command (not the convert button) and then you get: X That gave me an idea of a new shift-hold: convert doing CONVERT !!! Maybe this should go to ROM 1.19-7 ?! ==== 1) What is a density curve? 2) << -> n << n RAND * IP 1. + n >> DROP >> 'nRAND' STO { } 1. 150. START 10. nRAND + NEXT > I'm taking a beginning Statistics course that is equivent to a college > survey class. Of course, everything is geared towards the Ti-83. I > downloaded a couple of Stats programs (including Stats Pro 49), but I find > these apply mostly to inferenti statistics, and I'm doing descriptive > statistics right now. 1). Does anyone know if the 49G will be able to sketch a density curve from > a set of data or from a histogram? > 2). I know this is possible. But what command lets the cculator generate > a series of random numbers (say 150 random numbers between 1 and 10)? > ==== X > NewOS is _NOT_ using RPL entries, except some ACCESSERAM1 on HP49. Well - would it be possible to make it a FlashROM? Besides the BootLoader it could entirely replace the current ROM... ==== I recently purchased a used 48GX that's in 'like new' condition and the guy I bought it from said he bought it a only a year ago. However I was looking at a website that sold these cculators and noticed that it said they carried the newer black on grey display My screen appears to be a dark blue on green color so I'm wondering if my cc is actuly a lot older than what the guy told me. Could someone please clarify how new these 'newer' models actuly are and is there an improvement of visibility that comes with them as well? -Adrian ==== Everything? Rely? Will the Aplet support ever find it's way to the 1.19-7 ROM (1.19-8 ?) X > Please note that when designing the HP49G ROM we prepared everything so > having e-lesson on the HP49 would be possible. In fact, l the specific e-lesson entry points are there, including > pre-located reserved memory. There's even a dedicated object for the > e-lesson. > However, due to lack of time and management will, e-lesson support has never > been completed.. > ==== kruno, I have an IPAQ 3970 and run both a HP48 and HP49 emulator on the IPAQ. It runs at the same speed as a norm HP48/HP49. It is an exact reproduction has replaced my use of the actu ccs. Download the following files: http://www.hpcc.org/hp48/pc/emulators/emu48ce.exe http://www.hpcc.org/hp49/pc/emulators/emu-ppc48-49.zip Instl emu48ce.exe. Copy the KML scripts and BMP files from emu-ppc48-49.zip to the emu48ce directory. When starting emu48ce you can now select the ppc48/49 kml scripts. Murray. murrayrGREEN@hp.YELLOWcom > Does anyone know how emu48ce works with PDA's based on 400Mhz Intel Xsce > processor (iPaq 3970, Siemens Loox 600) with Pocket PC 2002 OS? > Can I use and store data, software (found at hpcc.org) and work with it > like on re > HP48/49 cculator? ==== > kruno, > I have an IPAQ 3970 and run both a HP48 and HP49 emulator on the > IPAQ. It runs at the same speed as a norm HP48/HP49. It is an exact > reproduction has replaced my use of the actu ccs. Download the > following files: http://www.hpcc.org/hp48/pc/emulators/emu48ce.exe > http://www.hpcc.org/hp49/pc/emulators/emu-ppc48-49.zip Instl emu48ce.exe. > Copy the KML scripts and BMP files from emu-ppc48-49.zip to the > emu48ce directory. When starting emu48ce you can now select the > ppc48/49 kml scripts. Murray. murrayrGREEN@hp.YELLOWcom > Does anyone know how emu48ce works with PDA's based on 400Mhz Intel >> Xsce processor (iPaq 3970, Siemens Loox 600) with Pocket PC 2002 >> OS? Can I use and store data, software (found at hpcc.org) and >> work with it like on re >> HP48/49 cculator? ==== News flash! We interrupt this program for news of a mathematic breakthrough! Is there any way to get 8 from 3 and 5? Yes! After years of profound cogitation, I have finly discovered the mathematic function that takes 3 and 5 as its inputs, and yields 8 as its output! Without further ado, here it is: 10^((32097*LOG( 5 )+18562*LOG( 3 ))/34649) = 8 ... to 12 digits. We now return to the war, which is ready in progress. -Joe- ==== HP41CX (not working) plus FA-2 cassette adaptor interface for auction: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=2304774436 Happy Bidding ! ==== Wrong newsgroup. For things like that, please use the classified ads section of www.hpmuseum.org Raymond Superman schrieb im Newsbeitrag > HP41CX (not working) plus FA-2 cassette adaptor interface for auction: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=2304774436 Happy Bidding ! > Corrction this should be : FA: HP41CX(not working) with 2 manus............though the link is right. I got things mixed up with my other FX-702P auction. > Kevin. ==== > HP41CX (not working) plus FA-2 cassette adaptor interface for auction: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=2304774436 Happy Bidding ! Corrction this should be : FA: HP41CX(not working) with 2 manus............though the link is right. I got things mixed up with my other FX-702P auction. Kevin. ==== > Yes, I'll add some remark to Fontman.txt but the parameter changer > will continue to recculate modulo 256 (not 245). > That's a good solution. That way, intelligent users will know why to > avoid font ID's above 244, but will still be able to use a font ID > above 244 ... Well, knowing that an ID > 244 does cause problems in using the stylers is perhaps lesser a question of intelligence but of information :-) Couldn't that have been avoided? A font contains the nibble pair for the length of name string twice, before and after the name, and hence a redundance of 2 nibbles. Fontman v.6 sets new Font Parameter (FP) in a diog box, for newbees. FP parameter changer. This clearly provides a faster user diog. JKH's FP changer has 332 bytes, my equivent FP changer has 136 bytes only and is much faster. What makes it particularly sml and fast is the nice new 49-command SREPL. - Wolfgang ftp://ftp.math.fu-berlin.de/pub/usr/raut/HP49/fonttools/ ==== I don't have a cable to connect my 48GX to a computer; how do I migrate the files I want from hpcc.org into my 48gx? Is there some way I can type them in? Craig ==== Craig Reed schrieb im Newsbeitrag I don't have a cable to connect my 48GX to a computer; how do I > migrate the files I want from hpcc.org into my 48gx? Is there some > way I can type them in? > If the files consist of UserRPL programs, it may work typing them in. Many files consist of binary data, which you can't type in directly. So I'd suggest to get a link cable, they're cheap and ease many things regarding your HP-48 ;-) Raymond ==== Craig Reed escribi.97 en el mensaje I don't have a cable to connect my 48GX to a computer; how do I > migrate the files I want from hpcc.org into my 48gx? Is there some > way I can type them in? > Craig Yes if you get the source from the zip archives when download. Other way is instl the programs in an emulator and get the programs yourself. You will need many many time for typing some big prgs... I strongly recommend the cable: it is a very good investment for getting a more powerful cculator. ==== Craig Reed escribi.97 en el mensaje I don't have a cable to connect my 48GX to a computer; how do I > migrate the files I want from hpcc.org into my 48gx? Is there some > way I can type them in? > Craig Yes if you get the source from the zip archives when download. Other way is instl the programs in an emulator and get the programs yourself. You will need many many time for typing some big prgs... I strongly recommend the cable: it is a very good investment for getting a more powerful cculator. ==== For transfer data into HP, is neccesary a seri cable RS232-HP. The cable is ... F1897-66000 from Hewlett Packard and the Connectivity Pac (one CD and the cable) is ... HP-F1897A. Your cost is ~ U$S 30. I'm didn't recommended make one, but if you thing what have, please consult the Eric Rechlin Web site (www.hpcacl.org or http://ca-on.hpcc.org) and type in the window search ... enrico carta. Enrico write over the pinouts. Miguel Angel CAPORINI HERK **************************************************************************** **** > Craig Reed escribi.97 en el mensaje I don't have a cable to connect my 48GX to a computer; how do I > migrate the files I want from hpcc.org into my 48gx? Is there some > way I can type them in? > Craig > Yes if you get the source from the zip archives when download. > Other way is instl the programs in an emulator and get the programs > yourself. > You will need many many time for typing some big prgs... > I strongly recommend the cable: it is a very good investment for getting a > more powerful cculator. > ==== Now one thing that I find funny is this: I put in the restrictions 0 <= x <= 2pi and then 'COS(2X)+1' > SOLVEX and it gives me: {X=3pi/2 X=pi/2 X=pi/2 X=3pi/2} Is the HP49 not smart enough to eliminate equ solutions? Maybe it has something to do with the fact that your ASSUME limitation includes two rounds for COS(2X) and therefore the double solutions, which is smart enough for the cc.... ;-) > Yeah, I noticed the same thing, but at the time I was so happy that the hp49 > gave me any correct answers that I rely didn't care about the repeated > answers. Maybe someone more knowledgeable than I can explain this > phenomenon. (Monsieur Bernard, s'il vous pla.94t. :-) ) ==== Nice thing that ZEROS. It will give a llist of { answers } only While SOLVE (or SOLVEVX) gives the { variable=answer} type list of solutions. I prefer using pha for trigs, (pha is the Nick's greek a) so the ASSUME is ways on (no need to 'X' UNASSUME) 'pha>=2*pi' ASSUME 'pha<=0' ASSUME > I just finished college trig and had the same question awhile back. Use the > ASSUME command to limit the answers. For your example it would look like > this - 'x>=0' > ASSUME > 'X<=2pi > ASSUME > 'sin(x)=1/2' > 'x' > ZERO (I use ZERO instead of SOLVEX, because in soft menu SOLVEX and SOLVE > look the same. SOLVEX should work too) > HP49 returns {5pi/6 pi/6} Make sure Numeric and Approx are unchecked in CAS mode. Use UNASSUME to > clear the X vues. And if I remember correctly ASSUME doesn't work > correctly with > and < (even though the online help for ASSUME uses > X>0 in the example). ways use >= and <=. And my fin tip - there is > no key for ASSUME or UNASSUME so you need to assign them to a user defined > key. Hope this helps. Dave > This may be a rely stupid question, but please do help me out :) How do you make a HP 49G give solutions for simple trig equations such as > sin(x) = 1/2 for x where 0 <= x <= 2pi ? > Is it possible for it to give me the solutions x = pi/6 , x = 5pi/6 > without > graphing? > I apologize once again if my question is obtuse to you. > -- > > ==== Nice thing that ZEROS. It will give a llist of { answers } only > While SOLVE (or SOLVEVX) > gives the { variable=answer} type list of solutions. > I prefer using pha for trigs, (pha is the Nick's greek a) > so the ASSUME is ways on (no need to 'X' UNASSUME) > 'pha>=2*pi' ASSUME > 'pha<=0' ASSUME That's an intuitive idea. How long does the assumption stay on? If it gets erased during a warm boot, then I should put it in the STARTUP var... but I have no knowledge of how to exactly use that variable yet. I guess I just put in the program << 'pha=3' ASSUME >> for example, and then store it to STARTUP. -- ==== > Anybody *other* than in France having trouble accessing either > www.holyjoe.net or www.godaddy.com? If not, it's merely a French > Connection problem. ==== > Anybody *other* than in France having trouble accessing either > www.holyjoe.net or www.godaddy.com? If not, it's merely a French Well, back in Austria, and is still doesn't work. The name holyjoe.net doesn't resolve (same for l the other names you've mentionned) netcract.com is able to scan your web site which is very weird.. Maybe you can only access it from the US ? ==== > Joseph K. Horn meinte >>Anybody *other* than in France having trouble accessing either >>www.holyjoe.net or www.godaddy.com? If not, it's merely a French >>Connection problem. Finland OK ==== > Anybody *other* than in France having trouble accessing either > www.holyjoe.net or www.godaddy.com? If not, it's merely a French > Connection problem. Denmark ok on l URLs. ==== >Anybody *other* than in France having trouble accessing either >www.holyjoe.net or www.godaddy.com? If not, it's merely a French >Connection problem. Ok, I've moved the whole kit and kaboodle to a new web hosting company (pair.com), and it seems MUCH faster than it ever was. Hopefully it'll be universly available now (or at least planetarily). New web address: http://holyjoe.net (reorganized into folders) -Joe- ==== We are 2 student that are trying to port linux (Timesys GPL) to an Embedded SH3 system. Everything works fine until we need to boot from the filesystem. We tried a few Ramdisk and Initrd Howto's but nothing seems to work. Is there anybody outthere that could provide us an initrd or ramdisk from approximaty 4Mb or less? this is what we tried, so far: We tried busybox. put the right libs in Ramdisk. > negative We tried busybox. build it static . > aren't able to compile. The initrd is found. Take a look at the termin logfile: De head.s file wordt geladen! . On node 0 totpages: 4096 zone(0): 4096 pages. zone(1): 0 pages. zone(2): 0 pages. CPU clock: 88.47MHz Bus clock: 44.23MHz Module clock: 22.11MHz Interv = 13824 Memory: 8956k/16384k available (1668k kernel code, 7428k reserved, 106k data, 48k init) Cibrating delay loop... 44.13 BogoMIPS Dentry-cache hash table entries: 2048 (order: 2, 16384 bytes) Inode-cache hash table entries: 1024 (order: 1, 8192 bytes) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes) Page-cache hash table entries: 4096 (order: 2, 16384 bytes) CPU: SH7709A/SH7729 POSIX conformance testing by UNIFIX Based upon Swansea University Computer Society NET3.039 Initiizing RT netlink socket Starting kswapd v1.8 devfs: v0.107 (20010709) Richard Gooch (rgooch@atnf.csiro.au) devfs: boot_options: 0x2 pty: 256 Unix98 ptys configured Seri driver version 5.05c (2001-07-08) with no seri options enabled ttyS01 at 0x02f8 (irq = 3) is a 16450 SuperH SCI(F) driver initiized ttySC0 at 0xfffffe80 is a SCI ttySC1 at 0xa4000150 is a SCIF ttySC2 at 0xa4000140 is a SCIF Re Time Clock Driver v1.10d block: queued sectors max/low 5754kB/1918kB, 64 slots per queue RAMDISK driver initiized: 16 RAM disks of 4096K size 1024 blocksize loop: loaded (max 8 devices) IP Protocols: ICMP, UDP, TCP IP: routing cache hash table of 16 buckets, 2Kbytes TCP: Hash tables configured (established 32 bind 52) RAMDISK: Compressed image found at block 0 Freeing initrd memory: 4096k freed VFS: Mounted root (ext2 filesystem). Mounted devfs on /dev Voert linuxrc uit kmod: failed to exec /sbin/modprobe -s -k block-major-2, errno = 2 VFS: Cannot open root device or 02:00 Please append a correct root= boot option Bart & Dennis ==== The TAB's are from the Statistic Library 2289 menu FUNCTAB GREY * you can use to give a GREY at command line PARAMTAB PARTFRAC * this is a re mistake POLARTAB SEQTAB SOLVETAB STAT2TAB STATTAB maybe even these SysRPL commands from 2057 menu: (Hypothesis tests & Confidence intervs) TI1M TI2M ZI1M ZI1P ZI2M ZI2P ZT1M ZT1P ZT1U ZT2M ZT2P ZT2U PS: Use you own judgement on these > XQ (and XNUM, its inverse) can be found in menu 142.02. The > others are probably somewhere, but I don't know where. Answer: ->Q and ->Qpi are in CONVERT REWRITE (NXT). Meta-answer: An phabetic list of L the HP49G programmable commands > with the menus that they're in can be found here: http://www.hpcc.org/hp49/docs/misc/cmdsmenu.zip If that list is not up to date, lemme know. Thanx. -Joe- ==== > http://www.hpcc.org/hp49/docs/misc/cmdsmenu.zip > If that list is not up to date, lemme know. Thanx. > -Joe- > The TAB's are from the Statistic Library 2289 menu list. > GREY * you can use to give a GREY at command line It's ready in the list. > PARTFRAC * this is a re mistake It's in there too. Perhaps you have an old list? The date at the top of > maybe even the SysRPL commands from 2057 menu... Again, I'll add 'em when they get some documentation. If any ready exists, please let us l know. Meanwhile, here's my latest versions of everything: http://holyjoe.net/cure/hp49gcat.txt http://holyjoe.net/cure/menus.txt http://holyjoe.net/cure/newshift.txt http://holyjoe.net/cure/newtypes.txt http://holyjoe.net/cure/main.txt -Joe- ==== Haa! I managed to slide in the HP 38G cover on my HP 48GX !! > The 39G used the same keyboard/case as the 49G but the 38G was a > completely new molding. There's no way that the 38G's sliding cover will > work with anything other than the 38G. I notice on the HP website awhile back that the HP 38G had a slide cover. I > have looked over the HP site but can not find a mention to it in replacement > parts. Sense the 38G is using the 48 stile case, those cover should work on > the 48 as well. Does anyone know what the part number is for the cover or > know where covers can be found? Richard Garner > rgarner@vidnet.net > ==== X > The HP-38G doesn't have the same case as the HP-48, > and the slide cover doesn't fit on it. The HP-38G case has a rail for the cover, > which the HP-48 doesn't have. > os the back of the HP-48 is rounded, > whereas the case of the 38G is nearly straight rectangular in shape. AFAIK the slide-on cover of the 38G is an > integr part of the machine, > which normly doesn't get lost... Raymond > Well it only slides to cover the keyboard on my HP 49G but I have succeeded in covering the LCD on both my HP 48SX _and_ my HP 48GX, what I was thinking of testing last year, but forgot until I read your answers today. I had two extra covers just for that and they are going stay on! ==== Since the 38G is using the 48 style case, those covers > should work on the 48 as well. Sorry, but the 38G case is very different from the 48 case. The 38G > slide-on cover does not fit on the 48. -Joe- > Funny! I just slided the HP 38G cover into my HP 48SX ==== Is there a part number on the cover or manu that could low me to order one from HP? > Haa! > I managed to slide in the HP 38G cover on my HP 48GX !! > The 39G used the same keyboard/case as the 49G but the 38G was a > completely new molding. There's no way that the 38G's sliding cover will > work with anything other than the 38G. I notice on the HP website awhile back that the HP 38G had a slide > cover. I > have looked over the HP site but can not find a mention to it in > replacement > parts. Sense the 38G is using the 48 stile case, those cover should > work on > the 48 as well. Does anyone know what the part number is for the cover > or > know where covers can be found? Richard Garner > rgarner@vidnet.net > ==== Is it possible to enter liter strings? There seems to be some string handling capability because the following works (with some text in the active note): NoteText+NoteText SIZE(NoteText) SUB Ans;NoteText;1;1 Ans|>L1(1) Can I make a function that accepts liter strings as argumnets (like STRING(Text)). Or must I make a command (Like DISP). DISP handles liter strings but I haven't found any way to enter liter strings. The best would be if I could make a function: NoteText+StringText But if that isn't possible it ought to be possible to make a command: STRING Ans;Text2*aText:NoteText+Ans that creates the string the same way as DISP. Ronny ==== > Can I make a function that accepts liter strings as argumnets Yes, you can. I've just figured out how to do it. This is the source code of an HP38G sample library that contains the command LEN, which returns the length of a string. ---------------------------------------------------------------------------- xROMID 702 ASSEMBLE =AtUserStack EQU #3D4A5 RPL EXTERN xLEN ASSEMBLE CON(1) 4 RPL xNAME LEN :: CK1&Dispatch THREE :: LEN$ UNCOERCE StoAns@Drp AtUserStack ; ; :: onestring !*triand 'Rapndit xLEN TrueTrue ; $ Returns the length of a string NULLNAME libcfg :: # 702 TOSRRP ; ---------------------------------------------------------------------------- 15 chars max. LEN expects a string, which can be entered like the string for DISP, that is: LEN ABC12DEF -> 8 LEN ABC 12 DEF -> 8 LEN NoteText -> ? (num of chars in NoteText) LEN(NoteText) -> idem Note that quotes cannot be entered inside parenthesis, use the command notation instead. Sever things to note: * The library id number must be greater than 701h or 1793d. * StoAns@Drp stores the result in the variable Ans, which is required. * AtUserStack is needed if you want the library to be erasable via LIB DEL (without the annoying Object In Use error). * Do you remember the XTT key bug on the HP38G? Detlef Mueller provided a workaround in his Skeleton Aplets 1.3 and 1.4, unfortunately the ternative command for XTT cannot be in a library whose romid is greater or equ to 700. (The 39G and 40G don't have the XTT bug). So, this workaround cannot be included in the source code above. My suggestion is to avoid the aplet at l, use only the library; to delete it, you can include a command that http://www.hpcc.org/V21N3/home.html Anyway, you should check that the library is not used by other aplets before attempting to delete it. examples. I plan to write a document describing how to handle strings on the HP38/39/40G ccs, with more details on the parser property, once I finish commenting the source code of the ticking clock aplet, soon available from the HPCC's website. HPCC #1046 ==== > If you go to my website at http://www.hphomeview.com and look on my Misc > aplets page you'll find a new aplet (well a library actuly) cled > Library L1540. This adds a whole heap of commands to the 39G which, > amongst other things, do conversions. Colin, thanks for your link... Actuly I had bumped into your > homepage before when checking out the cculator for reviews... but X > I am truly debating returning this and getting an HP48G+ instead. I would buy a HP 49G instead! You will be soon missing Symbolic Matrices, a better CAS than the 40G has and a huge FlashRAM for your programs and 3rd party libraries. It even has both RPN and gebraic modes, but I would use RPN stack and gbraic expressions, like: '(a+b)*c' The variable names can be long and even contain a dot. Like 'msbios.dos' or 'do.this.on.your.dos.machine', but be aware: A) Big and sml letters are different. B) If you ever change to comma (,) as the decim point, your lost with (.) C) You may even use different styles in names by using S~N Hacker Tool To my opinion the RPL is much easier to program than any Aplets (whether in the HP 39-39-40 or in Java :) ==== Hey everyone. New to the group..... Quick question - I recently purchased a Chotkeh (sp?) Mechanic Engineering PE Exam Application Card for the HP 48GX/SX. Long story short, it's been 12 years or so since I bought the cc, and 8 since I have been out of school. Need to pass my PE this time around and wanted some help remembering equations. Then I find out it's not fully compatible with the SX - not enough memory, or something - but I can keep pulling out of port 1 and into port 2 if I want. I seem to remember having memory cards at some point that can be merged with the cc memory. Would this be a possible solution other than popping the card out of slots 1 & 2? It seems like a nice program so far, too. Kinda annoying. -- Dan Hosek (remove 'remove' to reach me direct) ==== I'm not sure if I got it right, but... > Quick question - I recently purchased a Chotkeh (sp?) Mechanic > Engineering PE Exam Application Card for the HP 48GX/SX. Long story short, it's been 12 years or so since I bought the cc, and 8 > since I have been out of school. Need to pass my PE this time around and > wanted some help remembering equations. Then I find out it's not fully compatible with the SX - not enough > memory, or something - but I can keep pulling out of port 1 and into port > 2 if I want. > That's possible, if the PE application creates large data structures. Or did you try to copy its contents to RAM? This is not the way for HP-48 application cards, since those application pacs are designed to run from the card directly. BTW: The SX has 32K RAM built-in, the GX has 128K built-in. > I seem to remember having memory cards at some point that can be merged > with the cc memory. Would this be a possible solution other than > popping the card out of slots 1 & 2? > *RAM* cards can be merged. If you have an 128K RAM card, regardless if in port 1 or 2, you can merge the appriorate port with main memory. You can even merge both ports if you have RAM cards in both ports. This applies to the SX only, the GX can only merge port 1. Raymond ==== X > My New Year's wish (and maybe many other's) is for some company, > somewhere in the world to develop a programmable RPN cculator to > continue where HP has left off. In my mind, the HP48/49 User-RPL and > System-RPL languages are the apex of programming logic and utility, > the 41/42/32 keystroke logic, a very close second best. X Your wish is granted! HP has _not_ dropped the Saturn-line (yet:) PS: Buy as you still can, no more 49G in 2004 or...??? ==== > hi, the ez way is to press EQW and enter what ever you want, then hit enter my two pezs You can do even do EQW _inside_ the MTRW !! Try it out! > In gebraic mode, I can enter fractions into a matrix, like 2/3. In RPN > mode I have not found a way to do this. To enter 2/3 I have to enter > 0.6666666 etc. Does anyone know how (or if) I can enter fractions into a > matrix when I am working in RPN mode? I usuly do 2 3 / ENTER --Andrew Huey You can so do '2/3' ENTER You can do gebraic entry provided you enclose the > gebraic in tick marks as shown, or you can enter things > using RPN entry mode, in each case followed by ENTER. You can so key in sever entries in either format before > pressing the enter key and the HP will parse them correctly. ==== **** Post for FREE via your newsreader at post.usenet.com **** Today I randomly read a reply from Miguel Angel. He mentioned two sites. One was: www.hpcc.org the other was ca-on.hpcc.org . I have never heard of that one, so I tried it. It was exacly like www.hpcc.org, but after a while something strange hapenned. l the new additions disapeared, I was the first visitor since 1997, and there were 0MB of software. Can anyone explain it? And now after five minutes it is back in norm. Weird... Demo -- Demo Fight the spam, click on the link! http://www.hostedscripts.com/scripts/antispam.html Fight Spam! Click Here! -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= *** Usenet.com - The #1 Usenet Newsgroup Service on The Planet! *** http://www.usenet.com Unlimited Download - 19 Seperate Servers - 90,000 groups - Uncensored -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= ==== > Today I randomly read a reply from Miguel Angel. He mentioned two sites. One > was: www.hpcc.org the other was ca-on.hpcc.org . I have never heard of > that one, so I tried it. It was exacly like www.hpcc.org, but after a > while something strange hapenned. l the new additions disapeared, I was > the first visitor since 1997, and there were 0MB of software. Can anyone > explain it? And now after five minutes it is back in norm. Weird... I donÇt think you should be looking for a reason about that that. Sometimes servers crashes and sometimes your internet-line is unstable and sometimes they upgrade their servers, sometimes too many people are trying to get into the same website and you know... If a web-site doesnÇt work, then I usly try again some hours later and then thereÇs no problem, like in your case. BTW: if it wasnÇt because you asked about www.hpcc.org , wouldnÇt your post be off-topic? Martin J. ==== > I needed a cheap cc for the office, didn't need anything fancy, > just basic > scientific. I have a HP48+, HP32SII and HP49, and > I'm used to the quity of > the HP48 and HP32. Can't rely say > HP49 and 'quity' in the same sentence. > > Anyway, the I bought a HP6S, as it was very cheap, and I was curious. > It will You should have choosen a HP20S. I ready have a HP48GX, a HP48G+, a HP32SII, and purchased the 20S just because it is a nice little HP cc. The 6S is not made by HP. :-) -- ==== > > I needed a cheap cc for the office, didn't need anything fancy, > > just basic > scientific. I have a HP48+, HP32SII and HP49, and > > I'm used to the quity of > the HP48 and HP32. Can't rely say > > HP49 and 'quity' in the same sentence. > > Anyway, the I bought a HP6S, as it was very cheap, and I was curious. > > It will > You should have choosen a HP20S. > I ready have a HP48GX, a HP48G+, a HP32SII, and purchased the 20S > just because it is a nice little HP cc. > The 6S is not made by HP. :-) Actuly, I have a 20S too. One of the old ones with injection molded keys - I think l the current classic hp's you can still buy have painted keys. :( Pity the 20S isn't RPN. ==== Actuly, I have a 20S too. One of the old ones with injection molded > keys - I think l the current classic hp's you can still buy have > painted keys. :( Pity the 20S isn't RPN. > I have a newer 20S and if the keys are painted it sure is hard to tell. I have had it for about 3 or 4 months and it's been great so far. The good thing about the old one you have is that it has much better contrast of the labels above the keys. ==== > I needed a cheap cc for the office, didn't need anything fancy, just basic > scientific. I have a HP48+, HP32SII and HP49, and I'm used to the quity of > the HP48 and HP32. Can't rely say HP49 and 'quity' in the same sentence. The HP49 keyboard is the re sore point: the feel, layout, and durability are something you'd expect from a $10 speci rather than an HP. Another point that comes up a lot: the key labels that seem to be painted. My 49 was made recently, since it's made in China and comes with the so-cled Advanced Guide. The keys *do* look painted instead of injection-moulded. So in the interest of science and the burning curiousity of this newsgroup, I made the supreme sacrifice and poked at a key with an X-Acto knife. I chose the HIST key, since it seems to have no re purpose. And yes, the label is painted. However, it took some forceful digging to lift the cross-bar out of the H. At least it's *well* painted. I guess the keys will fade in time, perhaps a long time. But certainly not as long as my elderly HP45 and 48, which still look new. Bill ==== >> Actuly, I have a 20S too. One of the old ones with injection molded >> keys - I think l the current classic hp's you can still buy have >> painted keys. :( Pity the 20S isn't RPN. > I have a newer 20S and if the keys are painted it sure is hard to tell. I > have had it for about 3 or 4 months and it's been great so far. The good > thing about the old one you have is that it has much better contrast of the > labels above the keys. Yes, my fairly new 12C so has what I believe to be painted keys, though it's hard to tell. The reason I believe the later classics are painted are because I bought a HP48G+, and some of the keys had sml chips out of the paint. I so think JYA confirmed that the injection molding process for these had been dropped. ==== > I just read at > that HP announced last November that they were back in the cculator > business. Was this announcement made before or after they announced > that they were out of the cculator business? Which is the latest > news? You have it in your link. HP is not going to give up the competition. HP cculators are not dead! ==== >We've accelerated our product development plans and begun working with >our new aggressive ses and marketing partners around the world. I'd rather de with a nice sesman than an aggressive one... :-) Maybe this is how HP plans to compensate for the trash they've been putting on market. Instead of spending more dollars to make quity products, they spend those dollars to convince you that their stuff isn't rely trash, even though it looks and feels like it. Aaron ==== I'll be back! > Veli-Pekka Nousiainen: a great one in this forum. And a great 49borg > R Lion escribi.97 en el mensaje > Just that > ==== How can you solve inequties in the hp 49g? stuff like 2(x+5)<10. what about cuadratic inequties? (2x(x+2)>0) and sistems of inequties? ==== For MAC, PCs., PDA, HP-48 and HP-49G use: BELKIN USB-RS232 feme connection (5U109). Please see ... www.belkin.com Kermit protocol COM 3 or COM4 9600 bps and up. The price is ~ U$S 30 Miguel Angel CAPORINI HERK **************************************************************************** *** >Can I connect a Macintoh Computer G4 with the HP 49G for transfer data >between both computer. I use Mac OS X and so Mac OS 9.xx You'll need a USB to seri converter and a copy of kermit. Google will > help you find both. > ==== > For MAC, PCs., PDA, HP-48 and HP-49G use: > BELKIN USB-RS232 feme connection (5U109). Please see ... www.belkin.com Hans Joachim (.de) > 9600 bps and up. > The price is ~ U$S 30 > Miguel Angel CAPORINI HERK > **************************************************************************** * ** > >>>Can I connect a Macintoh Computer G4 with the HP 49G for transfer data >>>between both computer. I use Mac OS X and so Mac OS 9.xx >>You'll need a USB to seri converter and a copy of kermit. Google will >>help you find both. >> ==== into the OS and not taking up a 128KB RAM in slot 1. Build-in 128KB extra RAM ready MERGEd to the main RAM. Build-in 256 RAM module in (intern) slot 1. Build-in 1MB Flash RAM (no need for batteries) in slot 2. Build-in G49/Erable49 as CAS (with enhancements) Build-in ... this could go on forever. PS: I most forgot: MASD in ROM, Hacker tools in ROM, ... I miss the pretty-view for matrix in MK :-( Yes, me too. And some little things more of the Java's pretty print. But > this is the solution: http://www.hpcc.org/hp48/apps/mk/agrob4mk.zip > I hope this was as useful for you as it is for me. > ==== > into the OS and not taking up a 128KB RAM in slot 1. > Build-in 128KB extra RAM ready MERGEd to the main RAM. > Build-in 256 RAM module in (intern) slot 1. > Build-in 1MB Flash RAM (no need for batteries) in slot 2. > Build-in G49/Erable49 as CAS (with enhancements) > Build-in ... this could go on forever. > PS: I most forgot: MASD in ROM, Hacker tools in ROM, ... If only HP would combine l this with some decent hardware... -- Wayne Brown | When your tail's in a crack, you improvise fwbrown@bellsouth.net | if you're good enough. Otherwise you give | your pelt to the trapper. e^(i*pi) = -1 -- Euler | -- John Myers Myers, Silverlock ==== X > Perhaps I'm very wrong but I'm not interested in the 41: too much features > are option, then buy functions and memory modules. so the > batteries...Just seeing the Compare features of the hp museum I prefer the > 42. I find my HP 41CX filled with options (The FX & TIME modules + extras) and the HP-IL modele lows me to back-up and restore programs and data from the HP Digit Cassette Drive (or even a battery operated floppy drive). The HP 42S, with more functionity and speeeed - has no I/O for restore. ==== Is it possible, using KeyMan, to assign single press & double click & long press to the same key? Something like: if double do 1 else if long do 2 else do 3 ?? ==== Yes, you can. (with KEYMAN) Try with this. Write in rpn. <> <> press IfD <> SWAP (or press RIGHT CURSOR ARROW) press IfL press A?D (with norm press, not with long press) Press the key you want to assign. I think this is de correct order. If you choose the order Largo, norm and then Doble don't work. I HAVE A QUESTION. If you assign whatever you want (with long or double click) to a number key (i.e. 8), you will not enter the number 12385.89. Happens the following: 123 85. 89 WHY! ------------ Si se puede hacer (con KEYMAN). Escribe en RPN lo siguiente <> <> presiona IfD <> SWAP (o aprieta la flecha derecha del cursor) presiona IfL presiona A?D (with norm press, not with long press) Presiona la tecla en la que quieres hacer la asignaci.97n. Espero que te sirva. PREGUNTA. ËPor qu.8e asignar go (con click doble o largo) a una tecla num.8erica (p.ejemplo en la tecla 8) no puedo introducir el n.9cmero 12385.89? Me ocurre lo siguiente. 123 85. 89. ==== > Yes, you can. (with KEYMAN) > Try with this. Write in rpn. < < press IfD > < SWAP (or press RIGHT CURSOR ARROW) > press IfL > press A?D (with norm press, not with long press) > Press the key you want to assign. I think this is de correct order. If you choose the order Largo, > norm and then Doble don't work. I HAVE A QUESTION. > If you assign whatever you want (with long or double click) to a > number key (i.e. 8), you will not enter the number 12385.89. Happens the following: 123 > 85. > 89 WHY! ------------ Si se puede hacer (con KEYMAN). Escribe en RPN lo siguiente < < presiona IfD > < SWAP (o aprieta la flecha derecha del cursor) > presiona IfL > presiona A?D (with norm press, not with long press) > Presiona la tecla en la que quieres hacer la asignaci.97n. > Espero que te sirva. PREGUNTA. ËPor qu.8e asignar go (con click doble o largo) a una tecla > num.8erica (p.ejemplo en la tecla 8) no puedo introducir el n.9cmero > 12385.89? > Me ocurre lo siguiente. 123 > 85. > 89. ==== > As for 49G with Spanish manus, it is expected that a speci > production arrives in May. To me, it just sounds as if they are making more 49G's (but the same > 49G's as now). Maybe they've run out of stock. But on the other hand, > you may be right. They have run out of stock of the HP 49G ==== If you go to the HP.COM web site they show a HP49 picture for the cculator link. When you go there they do not list an HP49 as an option. The only list 10bii, 12c, 30s, 39g, 48Gx, 9g, and 9s. If they have indeed killed the 49g I say good bye. The way HP is going I may have to buy 5 HP41CX and 5 HP48GX off EBAY as a life time supply of RPN cculators. The thought of using a gebraic unit makes my cringe. Just my $0.02US worth. ==== Mini-chlenge: PRIME DATE PAIRS As has been pointed out in this newsgroup, dates should be programmaticly stored in the form yyyymmdd since they can be easily sorted *and* they are As you know, the only two integers on the number line which are adjacent and prime are 2 and 3. However, there are many consecutive prime date pairs on the date line, for example 20020531 and 20020601, which are adjacent days (when read as dates) and are both prime numbers (when read as 8-digit integers). This differs from ordinary prime pairs which are understood to be primes that differ by 2, such as 11 and 13. A) What are the *next* three prime date pairs (in the future)? B) What are the next three years that have TWO prime date pairs each? C) What are the next three leap-year (Feb/Mar) prime date pairs? D) What are the next three weekend (Sat/Sun) prime date pairs? E) What are the next three prime date pairs that are so prime pairs? F) Same as C above but only for years divisible by 400. G) Is it possible for a year to have THREE prime date pairs? The mini-chlenge this time is to find the answers using User RPL (libraries are lowed) and share your methods and insights with the group. That way, everybody wins. 1 Bonus Point if you were born on a prime date. -Joe- ==== > We, Virgil and I, were of course using this same exact formula l > ong, before Colin's post. It's seems Virgil was solving the equation > manuly. I was trying it with PROOT in my first two solutions and > then I switched to manuly solving the equation in my last two. Actuly, I was doing it as a vector space problem. Given recursion formula f(n+2) = a*f(n+1) + b*f(n), one easily gets the vector recursion formula [f(n+2) f(n+1)] = [[a b][1 0]]*[f(n+1) f(n)], and initi vector [1 0]. The eigenvues of [[a b][1 0]], using EGVL, are a/2 +- sqrt((a/2)^2 + b), and it should be obvious that under iteration most any vector will be rotated towards parlelism to the eigenvector having the largest (in absolute vue) eigenvue, namely, [ a/2 + sqrt((a/2)^2+b) 1] . Note that if e is either eigenvue of M = [[a b][1 0]] then [[a b][1 0]]*[e 1] = e*[e 1] = [e^2 e]. The ratio of f(n+1) to f(n) then will converge to that eigenvue. The only exceptions would be for initi vectors parlel to the other eigenvector, e.g., [ a/2-sqrt((a/2)^2+b) 1], which initi vector [1 0] is not. So my origin cculations took '[[a b][1 0]]' and executed EGVL on it. ==== > In gener, if the formula is F(n)=a*F(n-1) + b*F(n-2) then the vue is > given by: r = [a + sqrt(a^2+4b)]/2 Perhaps an interesting chlenge might be to write a program that will take as input any given surd such as root 2 and give as output the appropriate pair of consecutive Fibonacci numbers that will give (plus or minus a fraction) a fraction approximation to that surd and the fraction which approximates it correctly to n decim places. For example, we saw earlier that using {1,2} (the Pell sequence) gives root2+1, so an input of root2 into our new chlenge should output {1,2} with an adjustment of -1. Using this, and the Pell sequence of {1,2,5,12,29,70,169...} the approximations to root2 become: 2/1-1 = 1 5/2-1 = 3/2 (1.5) 12/5-1 = 7/5 (1.4) 29/12-1 = 17/12 (1.416666) and the fraction which approximates root 2 to 4 decim places is: 169/70-1 = 99/70. I have no idea whether this is even possible, it just seemed an interesting extension of the problem. However, there needs to be a bit of clarification to this first, so here's a question for Joseph... Why does the Pell sequence start with 1,2? If it is simply the Fibonacci sequence with a modified rule then why is the Pell sequence not {1,1,3,7,17,41...} instead of {1,2,5,12,29...}? Before anyone starts working on this new problem (if anyone wants to) could you clarify for us, Joseph, how to derive the first two terms of our base sequence? Are they the coefficients of the new rule? ie if the new defining rule is T(n)=a*T(n-1)+b*T(n-2) then are the first two terms {b,a}? If not what are they? ==== > if the new defining rule is T(n)=a*T(n-1)+b*T(n-2) then are > the first two terms {b,a}? If not what are they? IMHO, such a recursion is badly written. What is for n=0? Simply write T(n+2) = a* T(n+1) + b*T(n) to avoid any discussion. The initi vues T(0) and T(1) do not play any role in my precise proof of r= a + b/r for the limes r of [T(n+1)/T(n)], as long as they are positive. Thus, the limes of the sequence [T(n+1)/T(n)] is the same for the same a,b, no matter what your choice is for T(0) and T(1), at least not as long these are not negative. - Wolfgang ==== > >>if the new defining rule is T(n)=a*T(n-1)+b*T(n-2) then are >>the first two terms {b,a}? If not what are they? > IMHO, such a recursion is badly written. What is for n=0? Simply write > T(n+2) = a* T(n+1) + b*T(n) to avoid any discussion. How can it matter whether we define the rule for n=>0 or for n=>2? The rule is mathematicly and practicly the same. > The initi vues T(0) and T(1) do not play any role in my precise > proof of r= a + b/r for the limes r of [T(n+1)/T(n)], as long as they > are positive. Granted, but irrelevant. They do for producing the successive fraction approximations as I outlined. Hence my question to Joseph. ==== > Your derivation of the formula r = [a + sqrt(a^2+4b)]/2 is not quite > but nearly correct. > Under the assumption the sequence [q_n] with q_n = F(n+1)/F(n) is > convergent with limit r, say - and JKH definitely lows this > assumption - one can argue as follows: F(n+2) = a*F(n+1) + b*F(n). > Division by F(n+1) yields q(n+1) = a + b/q(n). Now, as is well known, > the limes operation and arithmetic base operations commute. Hence, > lim [a + b/q(n)] = a + b/r. Clearly, so lim [q(n+1] = r. Therefore, > r = a + b/r. Now, this is equivent to r = [sqrt(a^2 + 4b)]/2 as long > as r is positive (which it is :-) Incidently, you said that my result of r = [a + sqrt(a^2+4b)]/2 was 'nearly' correct. I think that if you check more carefully you will find that it is your vue which is incorrect. Your working above is most exactly the same as the working I quoted in my initi posting and r = [a + sqrt(a^2+4b)]/2 is simply the positive root of the quadratic r = a + b/r. Try checking your CAS and you will simply get my result. ==== > Your derivation of the formula r = [a + sqrt(a^2+4b)]/2 is not quite > but nearly correct. > Incidently, you said that my result of r = [a + sqrt(a^2+4b)]/2 was > 'nearly' correct. > For the norm Fibonacci sequence, F(n)=1*F(n-1)+1*F(n-2), we assume > that at the limit as n->infinity, we have r = F(n+1)/F(n)=F(n)/F(n-1). This is mathematicly confusing and even meaningless. Let's omit that you didn't mention n > 1 in your recursion formula. I concentrate on the essenti. The equation r = F(n+1)/F(n)=F(n)/F(n-1) is simply fse for each n > 1 because it follows from the context that you reserved r for the limes of the sequence [F(n+1)/F(n)], hence is a constant. And what means at the limit as n->infinity? This does not make sense as well, even linguisticly. You continue > [F(n)+F(n-1)]/F(n)=F(n)/F(n-1) > => F(n)/F(n) + F(n-1)/F(n)=F(n)/F(n-1) This is correct, and you coud have started just with these equations, omitting the previous nonsense completely. Next you write > => 1 + 1/r = r This is a critic step. It should have been at least mentioned that the lim operation commutes with the arithmetic operations + and / which is not at l trivi. Here is so essentily used that lim [F(n+1)/F(n)] rely exist. Next you write > I think that if you check more carefully you will find > that it is your vue which is incorrect. Nothing in my first reply to your post was incorrect, apart from my precipitate propos to make you the winner which I herewith withdraw. > Your working above is most exactly the same as the working I quoted > in my initi posting What means most? The style makes the difference. Better you'd not have replied too fast. You (and me as well) would have saved time :-) - Wolfgang ==== >>Incidently, you said that my result of r = [a + sqrt(a^2+4b)]/2 was >>'nearly' correct. > > > In fact, what you said in your earlier posting was... > Hence, > lim [a + b/q(n)] = a + b/r. Clearly, so lim [q(n+1] = r. Therefore, > r = a + b/r. Now, this is equivent to r = [sqrt(a^2 + 4b)]/2 as long > as r is positive (which it is :-) Your formula was r = [sqrt(a^2 + 4b)]/2, whereas my formula for the vue of r was r = [a + sqrt(a^2+4b)]/2 . It seems to me that since our formulas are different it would have been difficult for me not to draw the conclusion that you were saying I was wrong in my formula. As for your criticism: > The equation r = F(n+1)/F(n)=F(n)/F(n-1) is simply fse for >> each n > 1 Of course it is! That's why I said as n tends to infinity. The vues are of course never precisely equ but as n approaches infinity the fractions can be manipulated as units if they were equ (as you did too except you cled them q(n+1)). In the interests of brevity, bearing in mind how difficult it is to write mathematic formulae readably in ascii, I had not written it strictly correctly. Oh dear, how sad. Most people reading it would have interpreted it, as you apparently did as: lim F(n+1) lim F(n) r = n->inf ------ = n->inf ------ F(n) F(n-1) > Let's omit that you didn't mention n > 1 in your recursion formula. Again, oh dear, how sad. I assumed a certain degree of intelligence on the part of the reader as I did in the limit working. Sue me. > This is a critic step. It should have been at least mentioned that > the lim operation commutes with the arithmetic operations + and / > which is not at l trivi. Here is so essentily used that > lim [F(n+1)/F(n)] rely exist. Next you write I was not intending to present a textbook example of a limit problem. If I had included complete justification of every step I would have written so much that people would have missed the point in l the verbiage. **This is not a maths forum.** I had a conversation with a drunken university mathematics professor a few days ago who told me in tedious detail that by encouraging the use of graphic cculators in high school I was damaging the prospects of the students and corrupting the purity of the study of mathematics. He felt that maths students should not be lowed anything more than pencil and paper and log tables and spent some time telling me that every student should be able to prove everything from first principles. It sounds as if you would sympathise with him. I'm not normly this blunt in a posting. You've succeed in pissing me off. Congratulations. I won't be responding to any further postings on this topic. Frankly I don't care whether or not I won. That was never my intention in the first place. ==== > As for your criticism: > The equation r = F(n+1)/F(n)=F(n)/F(n-1) is simply fse for >> each n > 1 > Of course it is! That's why I said as n tends to infinity. With this formulation you would not pass any university examination in math. Learning linguistic discipline is a bacis task in math education, and the most difficult to learn. What could clearly be said should clearly be said. It's most ways shorter than any confusing text, in particular in the derivation of the formula under discussion. In my 1st reply I even accepted your confusing text and tried politely to correct it. If I'd known your arrogance I wouldn't have done that. university professor in math would have uttered such stupid things even if he is totly drunk. I ways encourage my students in math and info to use graphic cculators. And many students are happy doing this. - Wolfgang ==== REMINDER: The primary go of the mini chlenges on comp.sys.hp48 is FUN, not etern truth or technic perfection. The newsgroup needs no moderator this in mind in future mini chlenges. The winners of this contest are: 1st Place: Jonathan Busby for the 30-byte solution: << 2 / DUP SQ ROT + SQRT + >> It works on both HP48 and HP49, and returns an exact solution on the HP49 in exact mode. 2nd Place: Wolfgang Rautenberg for the 28-byte solution: << -1 UNROT ->V3 PROOT 2 GET >> This only returns an approximate answer, and requires the inputs to be in backwards order, but it's still elegant. Fixing the code to take the inputs in correct order is left as an exercise for the student. 3rd Place: Wolfgang again, for the idea of using EGVL, which he didn't code but which could be done something like this: << 1 0 { 2 2 } ->ARRY EGVL 2 GET >> This, like Jonathan's program, returns exact solutions on the 49G in exact mode, but this one seems to have the benefit of returning answers in simplified form, and the drawbacks of being slower and requiring the inputs to be in backwards order. Two unfinished business items: is: Because that's what Pell started it with. so because, as indicated in the origin post in this thread, that's what you get if you start with 0 1, just like the Fibonacci sequence. (2) Colin & Wolfgang: shake hands and play nice. You're both highly vued members of the comp.sys.hp48 community, but don't let your eG0BEEP. ;-) -Joe- ==== > As for your criticism: > The equation r = F(n+1)/F(n)=F(n)/F(n-1) is simply fse for >> each n > 1 > > Of course it is! That's why I said as n tends to infinity. With this formulation you would not pass any university examination in > math. So what? Are you here to examine people? Nobody cares if he(she) would pass an examination especily in case you were the prof. > Learning linguistic discipline is a bacis task in math education, > and the most difficult to learn. There speaks the professor who ready is such a linguistic insider that he manages to cl people terrorists if they don't respect him. Mwahahaha! What a comedian! > What could clearly be said should > clearly be said. It's most ways shorter than any confusing text, in > particular in the derivation of the formula under discussion. In my 1st > reply I even accepted your confusing text and tried politely to correct > it. If I'd known your arrogance I wouldn't have done that. The only arrogant person here is you. Colin's answer was politer than you deserve. Your lergy against any no is not Colin's problem. > university professor in math would have uttered such stupid things even > if he is totly drunk. I ways encourage my students in math and info > to use graphic cculators. And many students are happy doing this. So this professor encourages the usage of graphic cculators. And he is so stupid to believe that his students use the cculators because he says so. You know something professor? You could just stand on your head and jump on the ceiling to prevent your students from using graphing cculators. They wouldn't care! It doesn't matter what you tell to them. They will do as *they* want because they don't need a godfather to tell them what to do. So shut that bloody cake hole, you do nothing to make quity of education better. The only thing you do is to make your students laugh behind your back. BTW, as about quity of education in good old Germany, HA! that is a good joke. There has been a study (you know its name, don't you professorchen?), which you never mention, and which have shown how much of this quity has been destroyed by professors like you in the highest education institutes of Germany. Your average mind and is so predictable that it hurts. If I tell you that you are going to answer this posting by correcting my grammars just to show how stupid I am, then you will say that you don't bother answering such stupid postings. If I tell you that you don't bother answering my posting, you'll reply that you'll not disagree about the stupidity of my posting. ways find something to compensate for the fact that you will never reach what you search most, acknowledgement, respect and glory. You are an unimportant job, at an unimportant university, which nobody will know and will citate, until such fossile fachidiots like you, results from a very dark time, vanish. It is not bad to be unimportant. It is stupid to hount importance. But such fossiles like you would never get the difference. You want respect professorchen? That was my respect! Nick. ==== God save me from my friends! though I can't recl it at the moment. Please, Joseph is right and I probably should not have let things get to me in the first place whether I felt justified or not. Let's just let it lie, eh? > >>>As for your criticism: >>>>>The equation r = F(n+1)/F(n)=F(n)/F(n-1) is simply fse for >>>>>>>each n > 1 >>>> >>>Of course it is! That's why I said as n tends to infinity. >>With this formulation you would not pass any university examination in >>math. > So what? Are you here to examine people? Nobody cares if he(she) would > pass an examination especily in case you were the prof. >>Learning linguistic discipline is a bacis task in math education, >>and the most difficult to learn. > There speaks the professor who ready is such a linguistic insider > that he manages to cl people terrorists if they don't respect > him. Mwahahaha! What a comedian! >>What could clearly be said should >>clearly be said. It's most ways shorter than any confusing text, in >>particular in the derivation of the formula under discussion. In my 1st >>reply I even accepted your confusing text and tried politely to correct >>it. If I'd known your arrogance I wouldn't have done that. > The only arrogant person here is you. Colin's answer was politer than > you deserve. Your lergy against any no is not Colin's problem. >>university professor in math would have uttered such stupid things even >>if he is totly drunk. I ways encourage my students in math and info >>to use graphic cculators. And many students are happy doing this. > So this professor encourages the usage of graphic cculators. And > he is so stupid to believe that his students use the cculators > because he says so. You know something professor? You could just > stand on your head and jump on the ceiling to prevent your students > from using graphing cculators. They wouldn't care! It doesn't matter > what you tell to them. They will do as *they* want because they don't > need a godfather to tell them what to do. So shut that bloody cake > hole, you do nothing to make quity of education better. The only > thing you do is to make your students laugh behind your back. > BTW, as about quity of education in good old Germany, HA! that is > a good joke. There has been a study (you know its name, don't you > professorchen?), which you never mention, and which have shown how > much of this quity has been destroyed by professors like you in the > highest education institutes of Germany. Your average mind and is so predictable that it hurts. If I tell you > that you are going to answer this posting by correcting my grammars > just to show how stupid I am, then you will say that you don't bother > answering such stupid postings. If I tell you that you don't bother > answering my posting, you'll reply that you'll not disagree about the > stupidity of my posting. ways find something to compensate for the > fact that you will never reach what you search most, acknowledgement, > respect and glory. You are an unimportant job, at an unimportant > university, which nobody will know and will citate, until such fossile > fachidiots like you, results from a very dark time, vanish. It is not > bad to be unimportant. It is stupid to hount importance. But such > fossiles like you would never get the difference. You want respect professorchen? That was my respect! > Nick. ==== Solidarity of the empty barrels :-) ==== Solidarity of the empty barrels :-) Oh! It ended! ??? Just when it was tastefully Off Topic ;-) PS: It's nice to be back and find out that you have l learned good manners, respect for each other, and a naturly polite tongue l this while I was away...;-) ;-) ;-) ==== > The winners of this contest are: > 1st Place: Jonathan Busby for the 30-byte solution: > << 2 / DUP SQ ROT + SQRT + > 2nd Place: Wolfgang Rautenberg for the 28-byte solution: > << -1 UNROT ->V3 PROOT 2 GET >> > 3rd Place: Wolfgang again, for the idea of using EGVL, which he didn't code > but which could be done something like this: > << 1 0 { 2 2 } ->ARRY EGVL 2 GET >> One has generly to be careful with the eigenvue command EGVL because it works in exact mode only if the characteristic polynomi of the matrix made by ->ARRY is factorizable in exact mode. We are lucky in our situation since here this polynomi is x^2 -bx -a, with non-negative integers a,b. Let me add another sml chlenge to the one of JKH. I start here with any non-negative integers f(0), f(1) and the recursion formula (*) f(n+2)= a*f(n) + b*f(n+1) (a,b Gaussean integers). For simplicity, we restrict ourself to the example a=i, b=1, with i=sqrt(-1), that is, f obeys f(n+2)= f(n) + i*f(n+1). If the limes of the sequence [f(n+1)/f(n)] exist in the complex plane then it necessarily is a root of x^2-ix-1 = 0. Clearly, this are the conjugate complex numbers (-i+sqrt(3))/2 and (i+sqrt(3))/2. The question is does lim [f(n+1)/f(n)] rely exist for some or perhaps for any Gaussean vues f(0),f(1), and which of the two roots is then the limes? A proof by any CAS doesn't count (and hardly exist). Winner will be the first who comes up with elegant and precise arguments. - Wolfgang PS. Equations of the form (*) play a role in anytic number theory. And the famous solution (Matijacevic 1970) of an equly famous problem (the Fibonacci's sequence and its properties: Is there an gorithmic procedure for deciding whether any given Diophantine equation is solvable or not? The answer was no! This is a basic result in modern recursion theory and elswhere: Diophantine equations can be as complex as they could be, each recursively enumerable set of numbers is the solution set of some Diophantine equation. Perhaps somebody finds ad hoc a Diophatine equation whose solutions are just l primes. ==== > For simplicity, we restrict ourself to the example a=i, b=1 but I mean a=1, b=i. - Wolfgang ==== > The simplification comes from reizing the fact that if you > distribute the 2 in the denominator of the quadratic formula > (including inside the square root) you end up with two terms : > X/2 and X^2/4 . Since X^2/4 = (X/2)^2 and since the > distribution canceled out the 4 in the 4*Y term you can re-use > the X/2 vue and save 2.5 bytes by not having to perform a > multiplication *and* a division, only a division. Elegant! It beats my 35-byte solution! Can it be shrunk beyond 30 bytes? I seriously doubt it, in which case you win! Sub-chlenge: Given a desired *output* to the above program, what are l the possible integer inputs? -Joe- ==== of JB for computing r = b/2 + SQRT(SQ(b/2)+a) which is the positive root of x^2 -ax -b = 0 for positive res a,b > Elegant! It beats my 35-byte solution! Can it be shrunk beyond 30 bytes? I seriously doubt it, in which case you win! What is elegant here? It's the most stright-forward programming of the term in UsrRPL. Here is my solution, 28 bytes only: << -1 UNROT ->V3 PROOT 2 GET >> which is, apart from swapping the 2 arguments, equivent to the above. Arugment swapping should not count. My program first reads a and then b in solving the equation x^2 -ax -b = 0 which may considered even more natur. Decide yourself whether you admit UNROT which is definitely a 49 UsrRPL command, but not on the 48 :-) As you see, the essenti in my approach is the triviity that a polynomi and its negation have the same roots. - Wolfgang ==== of JB for computing r = b/2 + SQRT(SQ(b/2)+a) which is the positive root of x^2 -bx -a = 0 for positive res a,b, and equly the limes of the sequence [f(n+1)/f(n)] if the sequence f obeys f(n+2)= a*f(n)+b*f(n+1), with an arbitrary positive start vue f(0). > Elegant! It beats my 35-byte solution! Can it be shrunk beyond 30 bytes? I seriously doubt it, in which case you win! What is elegant here? It's the most stright-forward programming of the solution term in UsrRPL. Here is my solution, 28 bytes only: << -1 UNROT ->V3 PROOT 2 GET >> which is, apart from swapping the 2 arguments, equivent to the above. Argument swapping should not count. My program reads the re a first which may considered even more natur. You decide whether you admit UNROT which is definitely a 49 UsrRPL command, but not on the 48 :-) As you see, the essenti in my approach is the triviity that a polynomi and its additive inverse have the same roots. - Wolfgang ==== > Did you rely search l the commands in l menus > yourself one? Yes. Heavens! > If so, how did you do that? Manuly, going through the Menu Number List one menu at a time. You must be a very patient person, Joe. > Speaking > of which, please be aware that the HP49G Menu Number List has so been > updated: http://holyjoe.net/cure/menus.txt Oh, thanks, I noticed that and downloaded the document. > Unfortunately, there are many menus in the HP49G which are not numbered. I > think that those menus can l be accessed by typing MAIN. The MAIN menu > and its submenus are in the MAIN Menu List at > http://holyjoe.net/cure/main.txt Yes, that's kind of strange to me. I thought that any menu must have its number. I (most) never use these unnumbered menus, but nonetheless it is strange. It seems that I'm wrong. Greetings, Nick. ==== > I've been trying to simpify the following >> EXP(3*LN(10)*5^X) >> on the 49G CAS. I believe the result should be 100^(5^X) 1000^(5^X), perhaps. -- ==== The good old 48 gives 99,9999999992^(5^X) using COLCT EXPAN COLCT Using the old Eq editor's gebraic rules, you can get the exact solution: 100^(5*X) ==== > As I'm not an IP expert, is there a way how to surf without using DNS, > but > not offline. For example I want to connect to my comp just by using IP > address. This is done : with version 0.3-2701, 10.11.12.13 RESOLV returns #A0B0C0Dh as expected, so that surfing with IPs should be possible. -- Samuel Thibault csp.tar.gz: ascii text -+- #ens-mim - vive les browsers qui prennent des initiatives .88 la con -+- ==== > As I'm not an IP expert, is there a way how to surf without using DNS, > but > not offline. For example I want to connect to my comp just by using IP > address. This is done : with version 0.3-2701, 10.11.12.13 RESOLV returns > #A0B0C0Dh as expected, so that surfing with IPs should be possible. > Great ! I indeed thought about that problem, without having time to solve it myself. By the way, the 0.06 version of Navigator will very soon be released ! Bye, Yoann. ==== > By the way, the 0.06 version of Navigator will very soon be released ! I cannot wait. -- ==== > I have an mint condition, UNUSED, out of the box HP49G and separate > Connectivity Kit and l documentation ong with the origin packing FOR > SE. This may be a last chance thing as it is no longer available at HP. Fse information. > Will ship only to US. I purchased this because it was the only RPN cculator left besides the 12C > but after reading the manu, I reized it would take too much of my time > to become proficient at. You can respond here with information that will low me to contact you > directly. > Barry Shaklan, M.D. ==== Together with the distribution of emacs110a, IÇve been reading the Emacs.txt file and thereÇs a tutori I donÇt understand. IÇve searched google NG, but reized that I need help here because I must be too stupid to solve the problem myself :-( I do this (copied and pasted from Emacs.txt): ------------------------- 1. Press APPS, select Emacs and press the AsnEmacs key to make a few useful key assignments. In the tutori we will use RightShift & DOWNARROW = RPLED RightShift & RIGHTARROW = RPLCPL LeftShift & LEFTARROW = SDIAG where the & means to hold down the shift key while pressing the arrow key. 2. Start writing a UserRPL program by pressing RightShift <<>>. The builtin Editor starts up. Press RightShift <<>> a few more times to get more nested program delimiters (we will need them later). 3. Switch to the Emacs application menu by pressing RightShift & DOWNARROW. Press the Help key and then OK to see a chart of l Emacs commands. Press any key to go back to the command line. When I do the last thing: holding down RightShift and pressing the down-arrow-key the cursor moves down to the last line, but the emacs application doesnÇt start. When I enter the libs menu and press RPLED the editor starts just fine. IÇve now downloaded the keyman-library but nothing changes. I donÇt understand this. Could anybody please help? Martin J. ==== Have you turned on USER mode? Key assignments are only active when you are in USER mode. Press LeftShift USER (this is above the PHA key) in order to toggle USER mode. The mode is active if you see USR in the second headerline above the stack. - Carsten [...] MJ> When I do the last thing: holding down RightShift and pressing the MJ> down-arrow-key the cursor moves down to the last line, but the emacs MJ> application doesnÇt start. MJ> When I enter the libs menu and press RPLED the editor starts just fine. MJ> IÇve now downloaded the keyman-library but nothing changes. ==== > Have you turned on USER mode? Key assignments are only active when > you are in USER mode. Press LeftShift USER (this is above the PHA > key) in order to toggle USER mode. The mode is active if you see USR > in the second headerline above the stack. IÇve read some documents that says that itÇs possible to override default key-combination presses and that must have confused me :-) Martin J. ==== We have been without hp49 cculators in Spain since November. I would like to know if same situation happens in the rest of Europe, to know how the new European main distributor works. I have asked today, and they've told me to wait until second week of February. Could you imagine worst image for HP? People has begun their university exams in January, and most of them couldn't buy a hp49. Of course, they don't need a hp49 for the exam or could buy a hp48 instead, but... you know, market rules, and many people is very angry with HP because they have been telling that cculators would arrive next week. This is about HP, not the loc or nation providers, since both get their ccs from the European distributor. So, hp49 has dissapeared from Spanish market for most 4 months. In November we couldn't find any hp49 in any market in Spain. As I said before, I would like to know which is the situation in rest Europe. J.Manrique ==== I have wait since end of October 2002 for the HP49G. HP can not deliver. HP is a very good profession companay ;-) Hans Joachim (.de) In <11624751.0301271120.65a2924f@posting.google.com> J.Manrique Lopez de We have been without hp49 cculators in Spain since November. I would > like to know if same situation happens in the rest of Europe, to know > how the new European main distributor works. I have asked today, and they've told me to wait until second week of > February. Could you imagine worst image for HP? People has begun their > university exams in January, and most of them couldn't buy a hp49. Of > course, they don't need a hp49 for the exam or could buy a hp48 > instead, but... you know, market rules, and many people is very angry > with HP because they have been telling that cculators would arrive > next week. This is about HP, not the loc or nation providers, since both get > their ccs from the European distributor. So, hp49 has dissapeared from Spanish market for most 4 months. In > November we couldn't find any hp49 in any market in Spain. As I said before, I would like to know which is the situation in rest > Europe. > J.Manrique > ==== X > As for increasing ram, this unfortunatly will not help as the software is > not design to handle more RAM or Flash... > I'm sorry to here that, I thought that the system could handle FFF banks of 128KB. That would give us about dour 41-like slots for maximum of 128MB flash card on each - or maybe just another 2MB flash on top of the current one? There are some new extra low power flash ROM, size 8MB. BUT We are not going to get a HP 49GX :-( ==== Why not make the 8M Byte flash rom switchable in banks of 2 MBytes with an extern switch? Just an I D Stan >X >> As for increasing ram, this unfortunatly will not help as the software is >> not design to handle more RAM or Flash... > >I'm sorry to here that, >I thought that the system could handle FFF banks of 128KB. >That would give us about dour 41-like slots for maximum of 128MB >flash card on each - or maybe just another 2MB flash on top of the current >one? >There are some new extra low power flash ROM, size 8MB. >BUT >We are not going to get a HP 49GX >:-( > ==== > Why not make the 8M Byte flash rom switchable in banks of 2 MBytes > with an extern switch? This could work, but would require extra soft written in order for the system to take into account the fact that libs can apear and disepear at any time. In addition, the system banks must be ways visible... I would say that it is feasable with just a little bit of electronic... Just an I D > Stan X >> As for increasing ram, this unfortunatly will not help as the software is >> not design to handle more RAM or Flash... > >I'm sorry to here that, >I thought that the system could handle FFF banks of 128KB. >That would give us about dour 41-like slots for maximum of 128MB >flash card on each - or maybe just another 2MB flash on top of the current >one? >There are some new extra low power flash ROM, size 8MB. >BUT >We are not going to get a HP 49GX >:-( ==== X Vacations, perhaps? Suomi is a big country... I'' be back... ==== > X Vacations, perhaps? Suomi is a big country... > I'' be back... Welcome back! Welcome back! What was up? Greetings, Nick. ==== My old computer failed and I got a new one. It took me a while to build it from spare parts. (MSI Max2+Raid+LAN, 512MB DDR, 2GHz P4) and a new 21 monitor with a Radeon 8500 at 1792*1344, 32-bit, 100Hz AND I have instled W2000+l SPs+Office2000+l SPs+firewl+antipopup+antivirus+ XnView+Acrobat reader+Quicktime+Rre one+Power DVD+Nero+CloneCD+ Shockwave+Flash+Partition Magic+Ghostscript+GView+MS Java+Sun Java+ TVS 2000 (for Finnish TV show arms autometed from web)+VisuRoute+ MSN Explorer+MSN Messanger+WMP 9+WinZip+WinRAR+RegStudio+ A whole lottta drivers+HP cc stuff+etc. After about a hundred reboots everything seems to be zero killed aka 0K > X Vacations, perhaps? Suomi is a big country... > I'' be back... Welcome back! Welcome back! What was up? Greetings, > Nick. ==== > My old computer failed and I got a new one. > It took me a while to build it from spare parts. > (MSI Max2+Raid+LAN, 512MB DDR, 2GHz P4) > and a new 21 monitor with a Radeon 8500 at 1792*1344, 32-bit, 100Hz > AND > I have instled W2000+l SPs+Office2000+l > SPs+firewl+antipopup+antivirus+ > XnView+Acrobat reader+Quicktime+Rre one+Power DVD+Nero+CloneCD+ > Shockwave+Flash+Partition Magic+Ghostscript+GView+MS Java+Sun Java+ > TVS 2000 (for Finnish TV show arms autometed from web)+VisuRoute+ > MSN Explorer+MSN Messanger+WMP 9+WinZip+WinRAR+RegStudio+ > A whole lottta drivers+HP cc stuff+etc. > After about a hundred reboots everything seems to be zero killed aka 0K That sure sounds like a bloated PC. -- ==== Newbie question, but is it possible to transfer pictures (.bmp) to > HP49G and then watch (without colors ofcourse..)them. Or is there some > kind of programm that i can draw something and then watch it on 49? > tnx! Yes, there are many such tools! Pick your favorite! :-) > http://www.hpcc.org/hp49/graphics/graysce/ -Joe- > AND the PC program to convert to GROB & GREY http://www.xnview.com/ ==== anyone please tell me how to enter piecewise and step functions on the HP48GX? I'd rely appreciate it. so, is there an an way to find the second derivative directly? I've been finding the first derivative, writing it down on paper (which can be a pain), then entering it in again to find the second derivative. As you can see, this leaves lots of room for human error, and it's ready cost me some points on two exams. Jennifer ==== > anyone please tell me how to enter piecewise and step functions on the > HP48GX? I'd rely appreciate it. The HP48GX doesn't have the step by step mode. Only the HP49G offers this functionity. I hardly use it, so I can't comment how useful it is. > so, is there an an way to find the second derivative directly? I've > been finding the first derivative, writing it down on paper (which can > be a pain), then entering it in again to find the second derivative. > As you can see, this leaves lots of room for human error, and it's > ready cost me some points on two exams. Use the stack to do this or write a sml program. Example how to do this on the stack (RAD-mode): 'SIN(X)' 'X' [r-shift]-[SIN] gives you the first derivative: 'COS(X)' put again 'X' on the stack [r-shift]-[SIN] gives you the second derivative: 'SIN(X)' Roman Jennifer ==== > anyone please tell me how to enter piecewise and step functions on the > HP48GX? I'd rely appreciate it. You might like to try a trick for the piecwise defined functions that works well on the 39G. I would think it would so work on the 48 but I don't have one to test on. The trick is to divide by the domain of the function. For example, suppose that the function was: f(x)= x+5 for x<=-2, 10-x^2 for -21 On the 39G you would enter this as three functions F1(X),F2(X) and F3(X) as below. F1(X)=(X+5)/(X<=-2) F2(X)=(10-X^2)/((X>-2) AND (X<=1)) F3(X)=(5-X)/(X>1) When you graph this you will, on the 39G at least, get a perfect display with the discontinous portions of the graph not joined by 'vertic' lines as they often are with other methods (such as using an IFTE definition). The reason why it works is that the domain is a True/Fse test that evuates to 1 within the domain and zero outside it. This means that within the domain the function is being divided by 1 (no effect) but outside it is being divided by zero (undefined, so not graphed). You can see some pictures of the result (on a 39G) if you go to http://www.hphomeview.com/faqs_40-49.htm#47 ==== > anyone please tell me how to enter piecewise and step functions on the > HP48GX? I'd rely appreciate it. The HP48GX doesn't have the step by step mode. Only the HP49G offers this > functionity. I hardly use it, so I can't comment how useful it is. Roman, I think that Jennifer was tking about the step function and in gener about piece wise defined functions, and not about the step-by-step-(un)functionity of the HP49G. If this was the case, then of course it is possible to make such a piece wise defined function, which by the way the HP48 will so plot correctly. (Don#t ask here what the HP49G will plot in such cases ;-)) You can put IFTE in an gebraic, and for example define: IFTE(X>0,X,SIN(X)). If you want you can even enter for example F(X)=IFTE(X>0,X,SIN(X)) and press [DEF] to amke a user defined function. You proceed similarly with the step function, just use IFTE(X>0,1,0) or anything else. > so, is there an an way to find the second derivative directly? I've > been finding the first derivative, writing it down on paper (which can > be a pain), then entering it in again to find the second derivative. > As you can see, this leaves lots of room for human error, and it's > ready cost me some points on two exams. Use the stack to do this or write a sml program. A sml program which would look something like: << -> func var << func var gd var gd >> where gd stands for the curly d of the derivative function. Greetings, Nick. ==== > Bad Guy schrieb im Newsbeitrag I've a problem when I try to edit a matrix including fractions. > For example, I run Matrix Editing Mode. I enter the vue 1/2, I mean I > type '1/2'. And then, I got an error Invid Array Element. I cant believe that my HP48 cant support fraction in Matrix Mode. What sould I do ? RTFM;-) The built-in Matrix editor can't handle expressions. > Take a look at www.hpcc.org for Matrix editor ternatives. Buy a HP 49G !!! ==== > I hoped I could figure it out myself, but now I have to ask how I remove > that > annoying advertisement from $CONFIG... I'll just give an outline, since I don't know your skill level and don't want to plow you under if you're new at it. You'll need OT49 or other library splitter (Wolfgang's programs are as good as they get). Assuming OT49: put the library number on the stack and use the D<->L command to write it into Port 0 (Home dir) as a directory. Overwrite $CONFIG with this little program: << libnum ATTACH >>, where libnum is the equation library number (I can't remember what it is). Use D<->L again from inside the new version's directory and you'll have the eq library back on the stack with the changes made. If you store it in Port 0, the cc will attach it first and ignore the origin, which I assume you have in Port 1 or 2. Once you've confirmed that the new version works okay, you can purge the origin and move the new one to Port 1 or 2. Good luck, Bill ==== > You'll need OT49 or other library splitter (Wolfgang's programs are as > good as they get). That solved the problem... Very interesting, that OT49 program! I think IÇll have to work some more with this one :-) Martin J. ==== > first of l i want to say that i am immensely impressed with your > programs for the hp4x. they rely are great. > i am trying to learn system rpl (for 49), but to date, only one of my > programs has ever worked completely how it is supposed to, but even > that wasnt a full version. ... a version of the drug game thats l > over the place. the problem is that when it displays the drug prices, > they show up as 0's. i have tried many different things, but nothing > seems to work. if you could look at the program (attached), and try to > figure it out, i would greatly appreciate it. - thanks Mike Roberts to give some gener advices to those interested in SysRPL and direct senders with related problems from now on to this NG. Learning SysRPL fast and efficiently is IMHO possible only by hacking other people's SysRPL programs. Examples in Programming in SysRP are too simple and you'll never come to an end if reading it from A to Z. Clearly, you should have it ways at hand to look at the stack diagrams etc. Read so Eduardo's Programming the HP49 from hpcc.org (it got Erics GetIt star). Besides extable you should have at least the libs Emacs, Nosy and OT49 on your cculator. Try to follow the stack look of good programs by first debugging them on the 49 with flag -85 set. Every time you meet a runstream command press CON, to overjump it until the next xHT which must have been put beforehand at suitable places into the program - make a key assignment for quickly writing xHT in edited SysRPL programs. The builtin debugger was designed for UsrRPL but works so for SysRPL as long as no runstream commands are met or the return stack is not specily handled. Commands looking forward at the runstrem and not only backward at the data stack are runstream commands, e.g. the various quoting commands, the case-commands etc. In addition, decompile commands like casedrop, caseDROP etc with Emacs's Nosy tools to convince yourself that they rely do the expected. With extern tools available for the HP49 it is much easier to learn SysRPL today than it was in the times of the famous hackers (like D. M.9fller, M. Heiskanen and others). Unfortunately, I've no time to detach your or other SysRPL programs from this NG in case of a problem. I'll ways help as much as I can. But you will meet here other people which are excellent experts in SysRPL. ==== > Unfortunately, I've no time to detach your or other SysRPL programs from > this NG in case of a problem. I'll ways help as much as I can. But you > will meet here other people which are excellent experts in SysRPL. I agree, completely! And by posting in this NG, others will so benefit from the answers/discussion. Bothering individus IMHO would be waste of time and considering the fact that posts in this NG is read by many people, one could surely so expect a better answer to a problem here, since different approaches to a problem, here can be taken.. Martin J! ==== Some days ago I made a link list for somebody about SysRPL/Assembly programming. The main topic was programming the HP48, but it will be useful for the HP49 was well. In difference to Wolfgang I like developing on the PC, you will see this on the published links. Here it is, Christoph This is a link collection of selected tools that IMHO are useful to learn and making System RPL and Saturn Assembly programs for the HP48 and HP49. This list is far far away from to be complete, there are many other programs and document that are worth to be mentioned here. The best resource for these (and other) sort of materi is www.hpcc.org. - Origin RPL Compiler/Assembler package with documentation Many parts of this package are replaced by newer versions, it's recommended to use the latest versions http://www.hpcc.org/hp48/pc/programming/tools.zip - RPL Compiler/Assembler http://www.hpcc.org/hp48/pc/programming/hptool-3.0.8-win32.zip - Offici HP48 Entry point list http://www.hpcc.org/hp48/programming/entries/48entry.zip - Offici HP49 Entry point list http://www.hpcc.org/hp49/programming/entries/supentry.zip - IDE with Editor/Compiler/Debugger/Emulator for HP48/49 http://www.hpcc.org/hp49/pc/programming/debug4x.zip - Emu48 Emulator http://privat.swol.de/ChristophGiesselink/ - Entry point list data base http://zon.astro.uva.nl/~dominik/hpcc/entries/ - System RPL programming tutori http://zon.astro.uva.nl/~dominik/hpcc/progsysrpl_pdf.zip http://zon.astro.uva.nl/~dominik/hpcc/progsysrpl_examples.zip - Assembler programming tutori http://www.hpcc.org/hp48/docs/programming/asm-pdf.zip Wolfgang Rautenberg schrieb im Newsbeitrag first of l i want to say that i am immensely impressed with your > programs for the hp4x. they rely are great. > i am trying to learn system rpl (for 49), but to date, only one of my > programs has ever worked completely how it is supposed to, but even > that wasnt a full version. ... a version of the drug game thats l > over the place. the problem is that when it displays the drug prices, > they show up as 0's. i have tried many different things, but nothing > seems to work. if you could look at the program (attached), and try to > figure it out, i would greatly appreciate it. - thanks Mike Roberts to give some gener advices to those interested in SysRPL and direct > senders with related problems from now on to this NG. Learning SysRPL fast and efficiently is IMHO possible only by hacking > other people's SysRPL programs. Examples in Programming in SysRP are > too simple and you'll never come to an end if reading it from A to Z. > Clearly, you should have it ways at hand to look at the stack diagrams > etc. Read so Eduardo's Programming the HP49 from hpcc.org (it got > Erics GetIt star). Besides extable you should have at least the libs > Emacs, Nosy and OT49 on your cculator. Try to follow the stack look of > good programs by first debugging them on the 49 with flag -85 set. Every > time you meet a runstream command press CON, to overjump it until the > next xHT which must have been put beforehand at suitable places into > the program - make a key assignment for quickly writing xHT in edited > SysRPL programs. The builtin debugger was designed for UsrRPL but works > so for SysRPL as long as no runstream commands are met or the return > stack is not specily handled. Commands looking forward at the runstrem > and not only backward at the data stack are runstream commands, e.g. the > various quoting commands, the case-commands etc. In addition, decompile > commands like casedrop, caseDROP etc with Emacs's Nosy tools to convince > yourself that they rely do the expected. With extern tools available > for the HP49 it is much easier to learn SysRPL today than it was in the > times of the famous hackers (like D. M.9fller, M. Heiskanen and > others). Unfortunately, I've no time to detach your or other SysRPL programs from > this NG in case of a problem. I'll ways help as much as I can. But you > will meet here other people which are excellent experts in SysRPL. > ==== > I agree, completely! And by posting in this NG, others will so > benefit from the answers/discussion. Bothering individus IMHO would > be waste of time and considering the fact that posts in this NG is > read by many people, one could surely so expect a better answer to > a problem here, since different approaches to a problem, here can be > taken.. Here a posting I got today from Ich besch.8aftige mich gerade mit meinem 49 G und habe noch nicht > verstanden wie verstanden wie das mit den Library funktioniert. > Ich wollte erst m ein Grundverst.8andniss wie sie anlege und dann > die Befehle gebe, auf eine Antwort w.9frde ich mich freuen. Vielleicht > bekomme und dann dort bearbeiten kann um die Variablen abzulesen. > Sch.9anen Gruss aus Kassel - Rolf Eckhardt I don't understand the question. What is xls? Maybe somebody else could reply :-) - Wolfgang ==== > Learning SysRPL fast and efficiently is IMHO possible only by hacking > other people's SysRPL programs. Examples in Programming in SysRP are > too simple and you'll never come to an end if reading it from A to Z. > Clearly, you should have it ways at hand to look at the stack diagrams > etc. Write your own UserRPL program and then try to translate it to SysRPL (until there is no user xCOMMAND remain). I think that this could be a more moderated stage before hacking programs that you (maybe) barely known, and ways just from a user point of view. With this approach you will learn the basis of the language and after a while can take l the juice from other people's code. Sudos Jorge M. Venzani ==== > I agree, completely! And by posting in this NG, others will so > benefit from the answers/discussion. Bothering individus IMHO would > be waste of time and considering the fact that posts in this NG is > read by many people, one could surely so expect a better answer to > a problem here, since different approaches to a problem, here can be > taken.. Here a posting I got today from Hlo ... > Ich besch.8aftige mich gerade mit meinem 49 G und habe noch nicht > verstanden wie verstanden wie das mit den Library funktioniert. > Ich wollte erst m ein Grundverst.8andniss wie sie anlege und dann > die Befehle gebe, auf eine Antwort w.9frde ich mich freuen. Vielleicht > bekomme und dann dort bearbeiten kann um die Variablen abzulesen. > Sch.9anen Gruss aus Kassel - Rolf Eckhardt I don't understand the question. What is xls? Maybe somebody else > could reply :-) Microsoft Excel worksheet file format Maybe he could download the vues as a space/comma delimited file (as a string/text file) to his HP 49G ==== X > mentioned, the 49G is currently on se. so, I did check with the > supplier - and they apparently offer the 49G with an included PC link > cable... this is certainly pleasing. Then buy it now! ==== X > Finly, maybe there's a way of enforcing a 'user mode' of operation so > that unprivilaged apps could be limited somehow. This is obviosly > difficult without direct support of this feature by the Saturn but > perhapse the use of some API that encapsulates certain sensitive > operations and manages permissions could be encouraged by developers > of newOS programs. Sml note: use word developer instead of developers So nobody but you develope newOS programs? ==== > Do you want the recursion which takes ~ 20min. to cculate > on HP48 to get l digits correct ? Or some kind of simplified > expresion(which I haven't found yet:-) ? Whichever you prefer. Remember, the *smlest* one wins, not the fastest. -Joe- ==== > , hi, > is there anyway to make the cculator simplify ration expressions > in which there has been approximate cculations? in the same way, can > it just don't write a numers which is 0.000E0 ? > i'm using hp49G > thanks a lot If you use XQ or ->Q or ->Qpi, you will get an exact > expression which can be simplified. This works particularly > well when l the numbers in your expression are integers in > approximate form. AND then there is the EPSX0 command which looks at your CASDIR to find your eps(ilon) threshold to turn sml numbers to zeros. ==== > Mama mia! Do we have l now? Here's another one! Assume that two linear equations in X and Y are on the > stack. << 'X' ISOL DUP UNROT SUBST > 'Y' ISOL DUP UNROT SUBST EV That's the substitution method we learned as children. It can be extended > to solve a 3x3 system by adding another line, or to an NxN system by putting > the whole thing in a loop. Nice! So the didactic part has so its representants. > That's precisely the kind of homework (writing > such programs) that I assigned to my students to help them learn the > substitution method back in the days when we used HP programmable > cculators in the classroom. Those happy fellas! > *sigh* Gone are the days. And even more *sigh*, I never had the luck to be in such a class! The days ended before I could see them starting. But after l, this group simply refuses to vanish! Defenders of the faith :-) Greetings, Nick. ==== > How do u solve a system of linear equations on the HP49G? I don't > understand the entry of the coefficients through matrices. EX. > -3X+6Y=4 > 2X+Y=4 > ( I know the answer to this is obvious but it is just an example!) Thanxs in Advance CID Thanxs Everyone I was able to try l of your solutions and find one that was quick and easy! THANXS again!! CID ==== Is there a way on a HP 49G to find l possible sets of (x,y) in a function f: R^2->R (Two variables are needed to produce only one result.) Example: f(x,y)=(x/2)-(x*y^2)+(9*y^2) //Solution in this case: (0,0), (9,3) and (9,-3) Stefan ==== > Is there a way on a HP 49G to find l possible sets of (x,y) in a > function f: R^2->R > (Two variables are needed to produce only one result.) Example: > f(x,y)=(x/2)-(x*y^2)+(9*y^2) //Solution in this case: (0,0), (9,3) and (9,-3) Stefan I don't think I got that, Stefan. Do you mean to find l integer vues for X,Y, such that f(X,Y) is ways, say 0, or any other constant? Greetings, Nick. ==== Hej Nick! Yes, that's exactly what I mean! (The vues don't necessarily need to be integer vues, though.) The question basicly is, how I can determine the proper vaules of such a functions where it hits (0/0). Sincerely, Stefan > Is there a way on a HP 49G to find l possible sets of (x,y) in a > function f: R^2->R > (Two variables are needed to produce only one result.) Example: > f(x,y)=(x/2)-(x*y^2)+(9*y^2) //Solution in this case: (0,0), (9,3) and (9,-3) Stefan I don't think I got that, Stefan. Do you mean to find l integer > vues for X,Y, such that f(X,Y) is ways, say 0, or any other > constant? Greetings, > Nick. ==== Maybe this question makes it clearer/ more precise: How can I find critic points of such a function: f(x,y)=(x/2)-(x*y^2)+(9*y^2) > Is there a way on a HP 49G to find l possible sets of (x,y) in a > function f: R^2->R > (Two variables are needed to produce only one result.) Example: > f(x,y)=(x/2)-(x*y^2)+(9*y^2) //Solution in this case: (0,0), (9,3) and (9,-3) Stefan I don't think I got that, Stefan. Do you mean to find l integer > vues for X,Y, such that f(X,Y) is ways, say 0, or any other > constant? Greetings, > Nick. ==== > Example: > f(x,y)=(x/2)-(x*y^2)+(9*y^2) //Solution in this case: (0,0), (9,3) and (9,-3) Stefan I didn't get that... how did you get those solutions? I get: y = -1 and x = 18 or y = 0 and x = 0 or y = 1 and x = 18 -- Bhuvanesh ==== > Maybe this question makes it clearer/ more precise: > How can I find critic points of such a function: > f(x,y)=(x/2)-(x*y^2)+(9*y^2) The best way is to use the HESS function. In RPN mode: enter your expression then LNAME to get the list of vars then HESS SOLVE Now you have the hessian matrix at level 2 and the list of critic points found. To keep these points somewhere type DUP2 and do SUBST to get the nature of the critic points: this nature is given by the signature of the Hessian matrix at the points, you can get the signature by applying the SYLVESTER function to each matrix (in your example it is not necessary but it could be for a more complex matrix) in the list at level 1. Maybe you should make a little prog << LNAME HESS SOLVE DUP2 SUBST >> ==== > Maybe this question makes it clearer/ more precise: > How can I find critic points of such a function: > f(x,y)=(x/2)-(x*y^2)+(9*y^2) The best way is to use the HESS function. In RPN mode: > enter your expression then LNAME to get the list of vars > then HESS SOLVE > Now you have the hessian matrix at level 2 and the list > of critic points found. To keep these points somewhere type DUP2 > and do SUBST to get the nature of the critic points: > this nature is given by the signature of the Hessian matrix > at the points, you can get the signature by applying the > SYLVESTER function to each matrix (in your example it > is not necessary but it could be for a more complex matrix) in > the list at level 1. Maybe you should make a little prog > << LNAME HESS SOLVE DUP2 SUBST >> what does that mean? What's my fault? Greetings Stefan ==== Make sure not to use any implicit multiplication... E.g.: Write X*Y instead of XY (Hope this helped!) Gr.9f€e, Stefan > Maybe this question makes it clearer/ more precise: > How can I find critic points of such a function: > f(x,y)=(x/2)-(x*y^2)+(9*y^2) The best way is to use the HESS function. In RPN mode: > enter your expression then LNAME to get the list of vars > then HESS SOLVE > Now you have the hessian matrix at level 2 and the list > of critic points found. To keep these points somewhere type DUP2 > and do SUBST to get the nature of the critic points: > this nature is given by the signature of the Hessian matrix > at the points, you can get the signature by applying the > SYLVESTER function to each matrix (in your example it > is not necessary but it could be for a more complex matrix) in > the list at level 1. Maybe you should make a little prog > << LNAME HESS SOLVE DUP2 SUBST > > what does that mean? What's my fault? Greetings Stefan ==== Your answer works perfect! It does exactly what I was searching for! Greetings, Stefan > Maybe this question makes it clearer/ more precise: > How can I find critic points of such a function: > f(x,y)=(x/2)-(x*y^2)+(9*y^2) The best way is to use the HESS function. In RPN mode: > enter your expression then LNAME to get the list of vars > then HESS SOLVE > Now you have the hessian matrix at level 2 and the list > of critic points found. To keep these points somewhere type DUP2 > and do SUBST to get the nature of the critic points: > this nature is given by the signature of the Hessian matrix > at the points, you can get the signature by applying the > SYLVESTER function to each matrix (in your example it > is not necessary but it could be for a more complex matrix) in > the list at level 1. Maybe you should make a little prog > << LNAME HESS SOLVE DUP2 SUBST >> ==== QUESTION #1 I want to do this: sinc(x) for those who doesn't know, sin (pi*x) sinc(x) = ------------ pi*x where pi is 3,14...... << IF DEPTH THEN -> A << IF A 0 == THEN 1 ELSE pi A * DUP RAD SIN / INV DEG END >> END >> At this point each time i put an integer on stack I should get 0 but this is what i rely get: 1 -65.814E-15 2 65.814E-15 3 -65.814E-15 4 3.2489E-12 5 -3.2489E-12 ..... Please help me solving this problem. (I get the same wrong result if I put the cculator in RAD mode and try to cculate sin(2*pi)....) QUESTION #2 Some friends of mine told me that in gebra48 there are some usefull commands like ASIM,ADIV and similar: what they rely do? ==== QUESTION #1 > I want to do this: sinc(x) > for those who doesn't know, sin (pi*x) > sinc(x) = ------------ > pi*x > where pi is 3,14...... > << IF DEPTH > THEN -> A > << IF A 0 == > THEN 1 > ELSE pi A * DUP RAD SIN / INV DEG > END > > END At this point each time i put an integer on stack I should get 0 but this is > what i rely get: > 1 -65.814E-15 > 2 65.814E-15 > 3 -65.814E-15 > 4 3.2489E-12 > 5 -3.2489E-12 The vues you are getting are zero to 11 or more decim places, which is the best you can expect in a 12 place cculation. If you want more accuracy, there are long-float libraries for the HP48 I beleive. > ..... > Please help me solving this problem. (I get the same wrong result if I put > the cculator in RAD mode and try to cculate sin(2*pi)....) QUESTION #2 > Some friends of mine told me that in gebra48 there are some usefull > commands like ASIM,ADIV and similar: what they rely do? G48 has an downloadable manu which explains l its commands. > > ==== **** Post for FREE via your newsreader at post.usenet.com **** Try this: << IF DEPTH THEN -> A << IF A 0 == THEN 1 ELSE pi A * DUP RAD SIN SWAP / DEG END >> END >> And you could possibly leave out IF DEPTH THEN part and other parts to end up with: << pi * DUP RAD SIN SWAP / DEG >> It will be faster and HP ready has some stack check, so if you start it with empty stack it will show Too few arguments error. If still the error is still hapenning, change in MODE->CAS, Approx. check button or some other options. -- Demo Fight the spam, click on the link! http://www.hostedscripts.com/scripts/antispam.html Fight Spam! Click Here! Badger p.92.8ae v diskusn.92m p[CapitThorn].92sp.9evku QUESTION #1 > I want to do this: sinc(x) > for those who doesn't know, sin (pi*x) > sinc(x) = ------------ > pi*x > where pi is 3,14...... > << IF DEPTH > THEN -> A > << IF A 0 == > THEN 1 > ELSE pi A * DUP RAD SIN / INV DEG > END > > END > > At this point each time i put an integer on stack I should get 0 but this is > what i rely get: > 1 -65.814E-15 > 2 65.814E-15 > 3 -65.814E-15 > 4 3.2489E-12 > 5 -3.2489E-12 > ..... > Please help me solving this problem. (I get the same wrong result if I put > the cculator in RAD mode and try to cculate sin(2*pi)....) QUESTION #2 > Some friends of mine told me that in gebra48 there are some usefull > commands like ASIM,ADIV and similar: what they rely do? -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= *** Usenet.com - The #1 Usenet Newsgroup Service on The Planet! *** http://www.usenet.com Unlimited Download - 19 Seperate Servers - 90,000 groups - Uncensored -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= ==== At this point each time i put an integer on stack I should get 0 but this is > what i rely get: > 1 -65.814E-15 > 2 65.814E-15 > 3 -65.814E-15 > 4 3.2489E-12 > 5 -3.2489E-12 > ..... > Please help me solving this problem. (I get the same wrong result if I put > the cculator in RAD mode and try to cculate sin(2*pi)....) The answers aren't wrong, they're just unexpected results, as the manus say. When you cculate with pi, you can only get zero if you use pi with an infinite number of decim places. For that, we'll have to wait for the fabled HP50 - it has infinite RAM. :-) You can either accept the near-zero results, or you can write a test to check the result and substitute zero if the magnitude is below some arbitrary vue. You know, this happens so often, I'm surprised HP didn't supply a flag for rounding off sml answers. QUESTION #2 > Some friends of mine told me that in gebra48 there are some usefull > commands like ASIM,ADIV and similar: what they rely do? G48 is a must-have program for the HP48. It rely brings it to life. The commands like ADIV, ASUB, etc, are the usu divide, subtract, etc, optimized for gebraic manipulations. ASIM is like SIMPLIFY on the HP49. so, G48 v4 has a number of modules such as INTG (better integration than the 48 one) and Longfloat (arbitrary precision, but as, not infinity). It's one of those Get it! programs. Bill ==== I assume you are using an HP49G. You must be in radians and exact mode (not approximate) to get 0 and not a very sml number. You can not do this with an HP48G out of the box. !Demeter! ==== > ... Is there any way to 'word wrap' the line in the text viewer? The following is a very fast argument protected string viewer for very long strings (like 3.1415... or the 9999! string) which do not contain linebreaks (i.e. newline characters). It displays pi to 500 decims in less than .3 sec in full screen display which can nicely be scrolled verticly. Each filled line has 32 characters. 50 bytes, CRC ACB6h. :: DUPTYPECSTR? NcaseTYPEERR NULL$SWAP BEGIN DUPONE BINT32 SUB$ NEWLINE$&$ ROTSWAP !append$SWAP BINT33 LAST$ DUPNULL$? UNTIL DROPFSE SWAP ViewStrObject DROP ; It works for any strings, but may insert some addition linebreaks. If - Wolfgang PS. This is a good and not too difficult example for those who want to learn SysRPL. Just put in a xHT right after BEGIN and another one just after UNTIL, because these two commands affect the return stack. When reaching UNTIL in debugging, press CONT ! ==== Hlo zusammen, kennt jemand ein deutsches Buch .9fber System RPL. Ok es muss nicht unbedingt deutsch sein, aber f.9fr Einsteiger. Mit User RPL kenn ich mich schon ganz gut aus. Da die Programme jedoch sehr langsam sind, w.9frde ich gern meine Programme in System RPL schreiben. ==== Hlo, > Hlo zusammen, kennt jemand ein deutsches Buch .9fber System RPL. Ok es muss nicht > unbedingt deutsch sein, aber f.9fr Einsteiger. Mit User RPL kenn ich > mich schon ganz gut aus. Da die Programme jedoch sehr langsam sind, > w.9frde ich gern meine Programme in System RPL schreiben. > www.hpcc.org , und dort im Doc-Bereich. Ansonsten sind dort auch Links zu Tutoris. Raymond ==== X > You did not definitely say YES, I want a keymap switcher. So > let's see whether some other people will be interested in that. X YES, I want a keymap switcher ==== Where can i get a Sysev address list for the HP 49G? I so need a good (most importantly complete) library tutori, so for the 49g. ==== http://holyjoe.net/HP49.htm I think. > Where can i get a Sysev address list for the HP 49G? > I so need a good (most importantly complete) library tutori, so for the 49g. --- Checked by AVG anti-virus system (http://www.grisoft.com). ==== couldnt find anything their.. thanks anyways ==== i need some help, where can i get a sysev address list for the HP 49G? I so need to get a good (most importantly complete) library tutori. A.C ==== I would use CST menu instead... key and make run as a temporary menu. One of my programs is << 0 > TMENU >> to get me back to the menu I was using when I pressed the key > to get to this one. It works great except for one thing, when you > press it twice ( in other words while you're looking at the menu I > assigned to the key ) that now becomes the last menu and the << 0 > TMENU >> then doesn't take you anywhere. Is there a way to cure this? > ==== The standard sum of: sum from k=zero to infinity with X^k, the answer is 1 / (1-X) , if X < 1 Question 1) When i do (at my HP49G) the following (i don't type sum and infinity, just here...): sum(k=0, infinity, 0.5^k) it counts forever... until i interupt it, and then often the result is ok or if not very close. But why does it never stop? (my friends TI-89 answers right after he pressed enter, and HP should be better than TI, as we l know :-D ) Question 2) How do i factorize (if it's possible)?: 1 / (X^2 -2*X +1) If i mark the denumerator in the equationeditor and press FACTO my cculator responds with: ((-(1-X))^2*(-1)^2) which i think its quite stupid answer (-1)^2 <--- = Stupid // Jocke ==== > Question 1) When i do (at my HP49G) the following (i don't type sum and infinity, > just here...): sum(k=0, infinity, 0.5^k) it counts forever... until i interupt it, and then often the result is ok > or if not > very close. But why does it never stop? (my friends TI-89 answers right > after he pressed enter, and HP should be better than TI, as we l know > :-D ) In approximate mode, if you enter in 0.5, it does seem to be a little slow. However, when it is in exact mode, and I enter in 1/2, it's quite fast :) -- ==== before answering... may I ask what ROM do you have instled? Qith ROM 1.19-6 I hae the following behaviour: > Question 1) When i do (at my HP49G) the following (i don't type sum and infinity, > just here...): sum(k=0, infinity, 0.5^k) With flag 21 set: Written as this (note the 0.5) and evuating from exact mode I receive a question to switch mode into numeric and then an overflow error. In numeric the cc quite immediately display the overflow error msg. With flag 21 clear: It seems the cc counts forever but after pressing the cancel key I have the correct result on the stack which is, in fact a strange behaviour... If I write sum(k=0, infinity, (1/2)^k) the cc evuates correctly. > Question 2) How do i factorize (if it's possible)?: > 1 / (X^2 -2*X +1) If i mark the denumerator in the equationeditor and press FACTO > my cculator responds with: Mine with ROM 1.19-6 write (X-1)^2 Kickaha ==== Agreed. It's generly advisable to use standardized date and time formats. ISO 8601 is the choice to be taken to end this mess of different formats for every language: YYYY-MM-DD is the gener pattern. Just google for iso 8601 and you'll find the specs without having to pay a hundred bucks for the ISO standard. Yours, Markus >> 2:HOME27.2.03 8:15 *and* sorting by name will give more meaningful results. Greetings > Thomas > ==== > YYYY-MM-DD is the gener pattern. That may be useful for intern communication but not for a norm user who, IMHO, wants to read the date in the form he likes. My last filer versions solved the problem. A HOME backup when created inside the filer the indicated day. What do you want else? With a little datum arithmetic I could order the HOME backups according to date. But this would be a tot exaggeration. Even the most advanced user will have at most 2 or 3 HOME backups in a given port and one has them closely together with the filer sorting by type. The same convention is applied in creating Port0 backups in the other ports. l this backup management is done with the same multifunction key in a choose box ready presented here. - Wolfgang ==== > 1. Suppose you are in the filer in a port. A HOME backup in this port is > a directory which can be entered with RightArrow, as can every backup of > a directory. While the filer normly doesn't show the hidden directory, > in a HOME backup it is seen at the very end of the file listing. DO NOT > ENTER IT WITH RIGHTARROW, YOU RISK A TTRM. Playing with variables in the hidden directory from HOME has been removed as it will result in a TTRM. However, this is not the case in a backup. You can safely enter in the null-name directory without risking a memory loss. 2. While the ARCHIVE command accepts long port names (which may contain > a HOME backup under the name > 2:HOME27.2.03 8:15 > say, but one cannot RESTORE it. Even if the time is omitted in which > date format. By the way, this is a good example of the usefullness of I don't see any reasons why it wouldn't accept long names.. planned for ROM 19-7 is much easier customizable by those familiar with > SysRPL but it has still the bug under 1. Moreover, RightArrow does not > drive into a library's command menu anymore. Is this intended? so the Did you report the bug in bugs.hpcc.org. ==== > 1. Suppose you are in the filer in a port. A HOME backup in this port is > a directory which can be entered with RightArrow, as can every backup of > a directory. While the filer normly doesn't show the hidden directory, > in a HOME backup it is seen at the very end of the file listing. > Playing with variables in the hidden directory from HOME has been removed as > it will result in a TTRM. However, this is not the case in a backup. You can > safely enter in the null-name directory without risking a memory loss. Rightarrow in a HOME backup definitely ends up in a warmstart in ROM 19-6 (I once got a TTRM). The same in the filer planned for ROM 19-7 ... Other null-names, e.g., the ones created by the hiding tools in my filers, cause no problems. > 2. While the ARCHIVE command accepts long port names (which may contain > I don't see any reasons why it wouldn't accept long names.. You're right, if the tagged long name is on the stack, it works. But in an involved browser inside the filer one has seemingly to use a COLA in front of the RESTORE command which I did now and it works :-). That simplyfies a lot. In the filer versions tomorrow, a HOME backup name will probably even contain the time of creation. But only the VAR-switcher will show the time of creation since the name will be a bit too long :-) supports me a little in the difficult filer tool but doesn't post in this NG anymore. > Did you report the bug in bugs.hpcc.org. No I didn't, don't know how to operate it :-) - Wolfgang ==== > (I once got a TTRM). The same in the filer planned for ROM 19-7 ... > Other null-names, e.g., the ones created by the hiding tools in my > filers, cause no problems. I'll have a look into that. > You're right, if the tagged long name is on the stack, it works. But in > an involved browser inside the filer one has seemingly to use a COLA in > front of the RESTORE command which I did now and it works :-). That's weird.. > Did you report the bug in bugs.hpcc.org. No I didn't, don't know how to operate it :-) Go to this web site, create an account, then post a bug.. You can even be notified whenever the status of a bug is changed and it's the perfect way not to loose any bug ==== >>YYYY-MM-DD is the gener pattern. > > That may be useful for intern communication but not for a norm > user who, IMHO, wants to read the date in the form he likes. [..] > With a little datum arithmetic I could order the HOME backups > according to date. But this would be a tot exaggeration. [..] That's exactly my point. It's not worth it to write date sorting for every loce. Just switch to the ready sorted date. That pattern follows the gener scheme for arabic numers, where the leftmost digit is the most significant. It's definitely easier for people to learn just one clean and logic date format than to have a dozen formats in mind and having to convert once in a while, right?-). Then, there's no need for distinction between intern and user formatting. And it was not a criticism of your efforts, but a gener comment on date formats and on how to make life easier by adhering to reasonably simple standards. Just my 2 cents. Markus ==== > Rightarrow in a HOME backup definitely ends up in a warmstart in ROM > 19-6 > (I once got a TTRM). The same in the filer planned for ROM 19-7 ... > Other null-names, e.g., the ones created by the hiding tools in my > filers, cause no problems. After extensive test, I couldn't reproduce ANY bugs that you've reported regarding entering into null-name directory in a backup in either ROM 1.19-6 or ROM 1.19-7. Here is what I did: :2:FOO.DIR ARCHIVE Go into Filer, go into Port2, Right Arrow on FOO.DIR, right Arrow on '' directory. Could see the name just fine. Now, copy FOO.DIR into HOME directory Accessing the '' directory, from either the Folder list (TREE view) or using Right Arrow didn't produce anything speci but the desired norm behavior. Regarding the other bug you mentionned in ROM 1.19-7 (that you can't enter in a library anymore using the Right Arrow Key). I've tried entering in a library saved in Port2, Port1, Port 1 or in VAR using the right arrow key: no problem whatsoever... Finly, after a closer look at the xRESTORE command, I don't see why starting it with COLA is required to work with long file name. COLA is unecessary. There must be another problem in your code. Just did a test, and it works without COLA ==== Wolfgang Rautenberg with > Rightarrow in a HOME backup definitely ends up in a warmstart in > ROM 19-6 (I once got a TTRM). The same in the filer planned for ROM 19-7 > Other null-names, e.g., the ones created by the hiding tools in my > filers, cause no problems. > After extensive test, I couldn't reproduce ANY bugs that you've reported > regarding entering into null-name directory in a backup in either ROM > 1.19-6 or ROM 1.19-7. > Here is what I did: > :2:FOO.DIR ARCHIVE > Go into Filer, go into Port2, Right Arrow on FOO.DIR, right Arrow on '' > directory. Could see the name just fine. > Now, copy FOO.DIR into HOME directory This is not the problem. > Accessing the '' directory, from either the Folder list (TREE view) view is completely unclear to me. I use your origin filer for that > or using Right Arrow didn't produce anything speci but the desired > norm behavior. This is the problem on my new 49 with the origin ROM 19-6. I even deleted of HOME. After making a complete cleaning of the user memory to kill l possible viruses, I now get a different behavior: No warmstart anymore if trying be ended only by a warmstart. have such thing on a key. But it is unpleasant if the cc behaves unexpected. Maybe more people should read this thread and test it on their ccs. > Regarding the other bug you mentionned in ROM 1.19-7 (that you can't enter > in a library anymore using the Right Arrow Key). I've tried entering in a > library saved in Port2, Port1, Port 1 or in VAR using the right arrow key: > no problem whatsoever... This remains definitely a problem of my other 49 which is older but ok. > Finly, after a closer look at the xRESTORE command, I don't see why > starting it with COLA is required to work with long file name. COLA is > unecessary. Yes, I agree. Would be unlogic otherwise. It seems it was a memory problem, RESTORE (which by the way is extremely slow if the current HOME and the backup HOME are about 100 KB) seemingly needs a lot extra temp memory. Why doen't RESTORE itself make a fast and rigorous cleaning of HOME like on ON&A&F before it starts? The current HOME is lost anyway :-) - Wolfgang ==== I bought a HP38G a while back and have been reading up on SysRPL and everything else I could find on the Net. But the info on the interns of HP38G is quite thin. I am looking for an overview of the applet directory structure and how functions and commands are handled in Home and in Basic programs. Looking at the Applet examples there are a lot of code that shouldn't be changed. I like to understand how things work. Isn't there some intern HP documentation on the structure of Applets that someone could release? As I have understood it the HP48 looks for functions in Home. Is it the same in the 38G? What is Home? It seems so much simpler to program the HP48... Ronny ==== as ways: www.hpcc.org ! There you'll find extensive information, and links to pages with even more speciized info on the 38G. Raymond > I bought a HP38G a while back and have been reading up on SysRPL and > everything else I could find on the Net. But the info on the interns > of HP38G is quite thin. I am looking for an overview of the applet > directory structure and how functions and commands are handled in Home > and in Basic programs. Looking at the Applet examples there are a lot > of code that shouldn't be changed. I like to understand how things > work. Isn't there some intern HP documentation on the structure of > Applets that someone could release? As I have understood it the HP48 > looks for functions in Home. Is it the same in the 38G? What is Home? > It seems so much simpler to program the HP48... Ronny ==== I have downloaded everything that looked interesting but haven't found any info on applet structure except source code applet frame(s). They are commented but it's still hard for me to understand the overl structure and how user functions interact with the gebraic parser and the compiler. Ronny as ways: www.hpcc.org ! There you'll find extensive information, > and links to pages with even more speciized info on the 38G. Raymond ==== > when I turn ON the HP49G I can see for a short time > verticly white lines in the display. > Is that norm? Excerpt from the Compleat User RPL Encyclopedia (to appear online Re Soon Now): Green Lightning aka Green Flash The momentary display flash that's seen as the cculator powers up. It is harmless and expected. The flash is not green; the name is a throwback to old IBM monitors that made a similar flash when a new character set was being downloaded, and came to be affectionately known as green lightning among hackers. The IBM origin is perhaps closer to the HP display earthquake that occurs when a library is detached. None of these have anything whatsoever to do with the rare green flash seen momentarily above the Sun just as it sets. -Joe- ==== I have an HP-48GX with a crack in the LCD screen. Otherwise everything works fine. Can anyone tell me if it can be fixed or even if it would be worth it? If not does anyone have any ideas as to what ==== Where on the web can I find the plug-in ROM and RAM cartridges for my 48GX? Craig ==== I recently purchased a second hand 48GX and it didn't come with a PC link cable. I have phoned sever stores in my area (Victoria/Vancouver BC) and have had no luck locating one. I live in Canada and I would like to avoid ordering one from the States because of l the excess taxes and duty fees. If anyone knows of a Canadian website that sells them or a store located in Victoria or Vancouver BC could they please let me know. ==== Please, see the product HP1897A, in the next address : http://www.directdi.com/us/buyhp/asp/F1633A%23ABA.html Miguel Angel CAPORINI HERK **************************************************************************** *** > I recently purchased a second hand 48GX and it didn't come with a PC link > cable. I have phoned sever stores in my area (Victoria/Vancouver BC) and > have had no luck locating one. I live in Canada and I would like to avoid > ordering one from the States because of l the excess taxes and duty fees. > If anyone knows of a Canadian website that sells them or a store located in > Victoria or Vancouver BC could they please let me know. > ==== Same situation happened to me too, but I've built one (works like a charm) since. Informations from : http://www.hpcc.org/search.php?query=cable&hp48=1 HTH, Pyerre > I recently purchased a second hand 48GX and it didn't come with a PC link > cable. I have phoned sever stores in my area (Victoria/Vancouver BC) and > have had no luck locating one. I live in Canada and I would like to avoid > ordering one from the States because of l the excess taxes and duty fees. > If anyone knows of a Canadian website that sells them or a store located in > Victoria or Vancouver BC could they please let me know. > ==== i'd like to ask why l people in this group seem to think that the RPN mode is better than gebraic mode. i've played with the RPN mode and i think it's pretty good for short simple cculations but can't understand how it could be better in more complex cculations: - when doing a complex cculation, one can easily forget what was the last entry and in RPN mode he has no visu way to learn what entry to continue from - one must at first anyze the formula and then enter its parts as to get round unability to use parentheses - the programs written in RPN mode tend to be somewhat hard to read as l modern programming is done in gebraic mode i know there must be something to RPN mode - i just haven't come across an explanation why - would you please enlighten me? thanks in advance, -- fuf ==== > i'd like to ask why l people in this group seem to think that the RPN > mode is better than gebraic mode. > - when doing a complex cculation, one can easily forget what was > the last entry and in RPN mode he has no visu way to learn what > entry to continue from Most gebraic machines have this same problem. But I definitely lose track when entering formulae into gebraic machines. > - one must at first anyze the formula and then enter its parts as > to get round unability to use parentheses One does? I've never had to do this. You just enter it as you would evuate it if using paper and pencil. > - the programs written in RPN mode tend to be somewhat hard to read > as l modern programming is done in gebraic mode No. Re programming is done using languages such as C, Perl, Fortran, etc. (:-). Face it, cculators have lots of problems when it comes to programming, and the choice of modes doesn't rely affect things that much. However, both RPN and RPL have the advantage that they are soothly extensible and so programming can be grafted onto basic cculations. For example, I don't consider this to be a particularly readable program: if(s(DAYS),DAYS,if(s(x360D),x360D,x365D))+0*TODAY*l(TODAY,CDATE)} (It does date arithmetic on an HP27S/17B/17BII/19B/19BII solver.) > i know there must be something to RPN mode - i just haven't come across > an explanation why - would you please enlighten me? Probably, whatever mode you learned first is what is easy and obvious. Craig ==== When I taught cculator use to high schoolers (many ywars ago), they liked RPN because it mimicked the pencil-and-paper order of operations. Programs in RPN seem in gener to take about hf as many keystrokes as programs in gebraic. ==== - when doing a complex cculation, one can easily forget what was > the last entry and in RPN mode he has no visu way to learn what > entry to continue from > - one must at first anyze the formula and then enter its parts as > to get round unability to use parentheses I enter the formula from the beginning to the end and only pay attention to ^, *, + I don't have to anyze it. If I anyzed the formula, this way of entering the Formula gives me the opportunity of controlling the input for a second time. Especily in complex cculations it's necessary to double check the input. In addition it's easily possible to use interim results and you can divide your result in parts by meanings as p.e. rotation, accelleration, longitudin movement and so on. > - the programs written in RPN mode tend to be somewhat hard to read > as l modern programming is done in gebraic mode right, but this is not a PC where only the result is interesting. It's a handheld cculator. For handling masses of data with an ready developed gorithm I write a program or use excel or similiar Using the stack and RPN you can watch your formula develop, you get a feeling for the dimension of the parts of your formula. you can decide which part of it is the most important and where sml mistakes make the biggest difference. In my opinion the work with stack und RPN is the ide way for control and flexible work with formulas and results and there is much more ... Greetings Stefan PS: I think I belong to those peolpe who get 42 when they add 4 and 2 on a norm cculator :-)) ==== RPN, where he proposed that the CC mode of the HP-71B was better than RPN. Joe, if you have this in text format, perhaps you could post it to the group? RPN is better - uses fewer keystrokes - never work with more than 2 numbers at a time, etc. It does get complicated when you have lots of levels of division because you have to keep pushing previous results higher into the stack (which is harder on a 4-level stack machine, e.g. HP-12c, etc. than the 48/49). I've seen college students for years struggle with gebraic machines that have parentheses. They end up using more levels than required. Why do you think that TI themselves made their TI-30 (yes, the origin LED model) capable of handling 4 pending operations but with 15 levels of parentheses! Gene -- * These statements and opinions are mine one and do not reflect my employer's views. * - when doing a complex cculation, one can easily forget what was > the last entry and in RPN mode he has no visu way to learn what > entry to continue from - one must at first anyze the formula and then enter its parts as > to get round unability to use parentheses I enter the formula from the beginning to the end and only pay > attention to ^, *, + > I don't have to anyze it. If I anyzed the formula, this way of entering the Formula gives me > the opportunity of controlling the input for a second time. Especily in complex cculations it's necessary to double check the > input. In addition it's easily possible to use interim results and you can > divide your result in parts by meanings as p.e. rotation, > accelleration, longitudin movement and so on. - the programs written in RPN mode tend to be somewhat hard to read > as l modern programming is done in gebraic mode right, but this is not a PC where only the result is interesting. It's a handheld cculator. For handling masses of data with an ready developed gorithm I write > a program or use excel or similiar Using the stack and RPN you can watch your formula develop, you get a > feeling for the dimension of the parts of your formula. you can decide > which part of it is the most important and where sml mistakes make > the biggest difference. In my opinion the work with stack und RPN is the ide way for control > and flexible work with formulas and results and there is much more ... > Greetings Stefan PS: > I think I belong to those peolpe who get 42 when they add 4 and 2 on a > norm cculator :-)) ==== rot13 encoded schrieb > i'd like to ask why l people in this group seem to think that the RPN > mode is better than gebraic mode. i've played with the RPN mode and i think it's pretty good for short > simple cculations but can't understand how it could be better in more > complex cculations: ... > i know there must be something to RPN mode - i just haven't come across > an explanation why - would you please enlighten me? In case you need simply to copy a formula from a book, without thinking, it might be benefici to use gebraic mode. You simply need to copy everything and add some brackets for expressions with dividing operations. In pretty print (using the Equation-Writer) you can simply compare... but you switch off your thinking, counting brackets, take care for a good copy-work, without having results of single operations (which could be important for larger formulas, in case you like to verify your results in between) g Example: You would like to have the angle pha = arctan((cos(eps)*sin(lam))/cos(lam) RPN: eps cos lam sin * lam cos / arctan or you mix up in RPN-mode: 'cos(eps)*sin(lam)' lam cos arctan This is an example from Astronomy, where you need the quadrant of the arctan-function. This information would be lost in G-mode! When you are familiar with RPN, you can save sever keystrokes (against G) espaciy for more complex cculations. Forget about brackets. With RPN you will cculate first subexpressions and build them to the tot result (step by step). This is what you would do with with pencil and paper. The stack is your paper, learn how to manage the stack. Try e.g. to make the so cled Horner-Schema (for polynoms) with both modes (G and RPN). As mentioned above, you have the choice to use gebraic expressions (quoted: 'gebraic expr.') in RPN-mode. So combine it. To get familiar with RPN on an HP, learn about SPACE, ENTER, EV and NUM. It is usefull to now about stack-operations like SWAP DUP and ROT... and know how to use ENTER. I hate bracket counting, I like working with expressions :-) Heiko ==== i'd like to ask why l people in this group seem to think that the RPN > mode is better than gebraic mode. i've played with the RPN mode and i think it's pretty good for short > simple cculations but can't understand how it could be better in more > complex cculations: > Actuly in my experience, RPN has worked better for me on complex cculations. On my TI-89, I'll enter an expression and use lot's of parenthesis and soon I'm scrolling to the right to get the whole expression entered; invariably, I mess up the count and end up wasting a lot of time trying to scroll back and forth to find where things are unbanced. This can be so darn frustrating. After a while you just want a better way and that's what RPN delivers. Too bad I'm afraid to take my 11C out of the house anymore. If the 32SII was still on the market it wouldn't be such a concern since I could get a reasonable replacement, but I just can't bring myself to use the 11C because I don't want to wear it out -- and that's a shame. ==== i'd like to ask why l people in this group seem to think that the RPN > mode is better than gebraic mode. i've played with the RPN mode and i think it's pretty good for short > simple cculations but can't understand how it could be better in more > complex cculations: > RPN is much better from complex cculations than it is for short ones. Very often you will have cculations where portions are re-used in other cculations. It is VERY easy to cculate these, and duplicate them onto the stack for later re-use in RPN. It is nearly impossible to do that in g. (I'm ignoring STO/RCL work-arounds.) Without needing brackets, RPN takes a lot less space and key strokes. It is so MUCH easier to check at intermediate steps. g basicly has an l or nothing structure..unless you code to produce the intermediate result..which RPN ways has available.. Years ago I did some stuff with an HP67 using (abusing!) 256 steps of program space. The same cculations could not be stuffed into the 512 steps of space on an gebraic TI cculator. Personly, I can only do 2 operations in a row on a g machine... then I have to start re-entering stuff...I have NEVER been able to figure out g ccs. Geoff ==== > Actuly in my experience, RPN has worked better for me on complex > cculations. On my TI-89, I'll enter an expression and use lot's of > parenthesis and soon I'm scrolling to the right to get the whole expression > entered; invariably, I mess up the count and end up wasting a lot of time > trying to scroll back and forth to find where things are unbanced. This > can be so darn frustrating. After a while you just want a better way and > that's what RPN delivers. And that's what the EQW delivers, too. Personly, I used RPN only to be able to see how the expression was being built up; now that I have EQW, I don't use RPN much any more. And no, it's not that I don't know how to use it (after l, I used it for quite a while before EQW was released). -- Bhuvanesh ==== > It is VERY easy to cculate these, and > duplicate them onto the stack for later re-use in RPN. It is nearly > impossible to do that in g. (I'm ignoring STO/RCL work-arounds.) Actuly there is the ans() function. The funny with thing gebra notation is that people will use rpn without knowing it. If a numerator or denominator is rely large I'll divide it up into sepearte cculations. -Samuel ==== the HP49 asks me if i want to switch to rad and turn num mode off > and when its done i ways have to set it back. did i do something wrong ? No, that's just the way HP decided to do things. > Some ways to de with it: Set modes & flags the way you want, then: HOME RCLF 'MYFLAGS' STO << MYFLAGS STOF >> 'MF' STO Then, whenever you want to recover your own preferred mode > settings, just type MF (or assign 'MF' to a keyboard location). You might as well set flag -120 before storing your preferred flags > as above, which will eliminate most of the diog boxes which > would otherwise pop up (except for the purge variable diog). AND one can put that program in betaENTER (beta=Nick's greek b) and set the Vectored ENTER flag << My.Flags STOF DROP >> 'betaENTER' STO Warning: Mat slow your c a bit. Another approach, which may be most useful in programs: > http://groups.google.com/groups?selm=3CB94E4C.AB177E90%40miu.edu [r->] [OFF] > And the commands PUSH POP offer yet another possibility. > PUSH saves your flags (and current working directory), and POP re-stores them again. Greetings, > Nick. ==== > When it is necessary to keep something stored permanently in the home VAR menu. - The File Manager is very easy to use for major > housekeeping tasks like moving and renaming. l tasks can be done > quicker from the keyboard but the file manager takes less brain power > which is normly in short supply. Filer1 or Filer2 from hpcc.org (or better from my site) are filer replacements which are much more powerful than the builtin filer. In particular, on you've got a HIDE/UNHIDE choose box on the SPC key if beeing in a directory. Moreover, my filers need no brain power at l :-) The main menu contains a topic KEYS with complete info on the hardkey options. In particular, it tells you SPC H?U/A?R (i.e. HIDE/UNHIDE box in a directory, ARCHIVE/RESTORE in a port) Thus, SPC is a particular powerful, multifunction key in Filer1+2. Note that ARCHIVE from my filers creates a HOME backup with the date appended! This is a rely pleasant interface enhancement. And you can keep various HOME backups in port1 and port2, theoreticly even more than 12 pieces, 100 KB a piece. Still another advantage of the HIDE/UNHIDE functionity in my filers: You can unhide a selection of hidden files, not only l hiddens in one keystroke as in my HIDE lib or in other hiding tools. - Wolfgang ftp://ftp.math.fu-berlin.de/pub/usr/raut/HP49/tools/ ==== > I hate it whenever I then once in a while has to find a variable > between a lot of crappy garbage variables... GOTO that helps do it for me. It's only a minor help (you have to ready know the name that you're looking for), but it's helpful enough that I use it many times each day. You type the name of a variable (in tic marks, of course) and then run GOTO, and the VAR menu is automagicly changed to the page on which that variable appears. No more hunting through pages and pages of variables. 'GOTO' << VARS SWAP POS 5. + 6. / IP 1. % 2. + TMENU >> number of the menu page you're looking at. Since 'GOTO' itself will probably get lost in the VAR soup, you might prefer to name it something shorter or assign it to a key for easier access. -Joe- ==== 1.- HI. How can do this? I have sever functions and I wanna ADD them horizontly: f1(x)= 3x+2; f2(x)= 15x-10; f3(x)=x^2-15 y x1 x2 x3 x1+x2+x3 --------------------------------- 0 -0.67 0.67 3.87 3.87 0,8 -0.40 0.72 3.97 4.29 1.0 -0.33 0.73 4.00 4.40 1.5 -0.17 0.76 4.06 4.69 2.0 0.00 0.80 4.12 4.92 Y | . , % * | . , % * | . , % * | . , % * | . , % * | ., % * | ,. % * |, . % * ----------------------------------------------------------- X Where (*) = (.) + (,) + (%) (HORIZONTLY) It is a tipic problem to cculate the flow of hydraulic pumps mounted in parlel form. 2.- Any body has information about the commands MKISOM and ISOM? I think it can flip and rotate a function and change Y by X. It's posible? 3.- Are there any way to do a graphic from lists or matriz? {[1 2][145 300][1599 2000][-58 20]} I want to represent this couple of points. Are there any way to edit the Y column in TABLE? What I wanna say step by step is this. 1.bc- Press LS+F4 at EQ: enter a function Y=x^2+25 2.bc- then press LS+F6 and you’ll see a table. 3.bc.- If you edit the X column the hp49 cculates the Y vue. My question: Are there any way to edit the Y column to cculate the X vue of some function for the same vue of Y???? 4.- What's the meaning of SOFT-MENU and the difference between this one, TMENU and MENU? I'm sorry but I write and speak english very badly.... THANKS ==== Where can I find chemic engineering programs for HP 48G (e.g. flash cculations, dew point and bubble point cculations, etc.)? Nutcracker ==== > Where can I find chemic engineering programs for HP 48G (e.g. flash > cculations, dew point and bubble point cculations, etc.)? Did you check http://www.hpcc.org/hp48/science/chemistry/ ? -- Kenyon Rph | www.therphs.us | Semper Fi ==== > however, now that I have l the different units at the bottom of my screen, > how do I put it back to the standard menu? I can get back if I do a reboot, > but there must be a simple way. I hope. TOOL. -Joe- ==== I would like to know the electric caracteristics of the 48's address/data bus. They must be ttl compatible, but, are they rely ttl? Or are they ttl inputs and cmos outputs? I was hoping for some vues for Vih and Vil tresholds for both input and output, idely with a max-min vues spec. Any help is greatly apreciated. Steve Sousa ==== Perhaps someone could help me with this : I decided to purchase a 49G cculator and am now wondering wether it would be possible to upload any of the 39G/40G e-lesson applets available from hpcc.org. I've never instled any cculator software as of yet (even software designed for the 49G), so - generly I don't have much idea what I'm doing :) Either way, I'm assuming some kind of conversion would need to be done? Specificly I'm looking at the applets which HP released themselves. The .zip files off of hpcc seem to contain some files with extension .000 and generlly one file with extension .CUR; Is there any way to instl these so that they can function on my 49G? If so - please describe the process - would be much appreciated. eshylay ==== **** Post for FREE via your newsreader at post.usenet.com **** Does anyone know how to perform Floating points cculations on HP4x in assembly language AND without using any ROM routines? I need to implement it into NewOS. Thanx, Demo -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= *** Usenet.com - The #1 Usenet Newsgroup Service on The Planet! *** http://www.usenet.com Unlimited Download - 19 Seperate Servers - 90,000 groups - Uncensored -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= ==== > Yes, I'll add some remark to Fontman.txt but the parameter changer > will continue to recculate modulo 256 (not 245). That's a good solution. That way, intelligent users will know why to avoid font ID's above 244, but will still be able to use a font ID above 244 if they rely want to for some reason. I'm a member of the inform me of the -Joe- ==== I can't seem to be able to graph vector functions on my HP 49G even though the manu says the cc can graph 3d parametric surfaces. For example, how can I graph something like r(t) = (a Serge ==== Help me! I have an HP-49g seri number ID00800349. I have two problems. MY displays getting kinda scratched after a year of usage, and much more criticly MY KEYS ARE FADING!!!! The text on the 'ON' button is practicly gone... '.' and '0' are most gone as is 'Enter'. How can I fix this problem/ prevent this from getting worse? -JP ==== My ENTER and ON keys are the most erased of l too, but I haven't use them much more than the others. Then I stop using the rigid cover, replacing it with the 48gx soft cover. It stop the fading (or at least slows it a lot). Less than 1 mm of height in the cover could have prevent this problem. Sudos Jorge M. Venzani > Help me! I have an HP-49g seri number ID00800349. I have two problems. > MY displays getting kinda scratched after a year of usage, and much more > criticly MY KEYS ARE FADING!!!! The text on the 'ON' button is > practicly gone... '.' and '0' are most gone as is 'Enter'. How can I > fix this problem/ prevent this from getting worse? -JP ==== > MY displays getting kinda scratched after a year of usage, and much more > criticly MY KEYS ARE FADING!!!! The text on the 'ON' button is > practicly gone... '.' and '0' are most gone as is 'Enter'. How can I > fix this problem/ prevent this from getting worse? It's a known problem. Check out my crummy keyboard: http://holyjoe.org/crummykeys.htm The only way to prevent further wear is to stop using it. So you'd better memorize the keyboard now before l the keys are blank. >:-O The only suggestions that I can think of (e.g. don't stab the keys but press them as lightly and slowly as you have patience for; only use the HP49G after washing your hands; don't let your fingernails touch the keys; etc.) are so obvious that I won't mention them. Here's an idea: scrub them with fine-grit sandpaper until they're l blank. That will totly prevent them from getting any worse. ;-) -Joe- ==== > I miss the pretty-view for matrix in MK :-( Yes, me too. And some little things more of the Java's pretty print. But this is the solution: http://www.hpcc.org/hp48/apps/mk/agrob4mk.zip I hope this was as useful for you as it is for me. ==== Bill Storey escribi.97 en el mensaje I've completed an ace's poker: 15c, 32SII, 42S and 48GX... > What, No HP41? > Bill Yes Bill, I perfectly know that since a collector or historic point of view, the 41 an not the 32 is a better option ( much more better ) Rely I've never thought to buy the 32SII but two months ago I found it at 78 euros in a shop, and I couldn't resist. Perhaps I'm very wrong but I'm not interested in the 41: too much features are option, then buy functions and memory modules. so the batteries...Just seeing the Compare features of the hp museum I prefer the 42. ==== just in case someone wonders about > that new poster 'Raymond Del Tondo'. > It's me. Congratulations! Best for both of you... > My girl and me got married yesterday, > and since we didn't want a double name, > nor two separate names, > I took the name of her family. Why didn't she take your name instead ? :) (sounds more logic to me being an arrogant French me) ==== > My girl and me got married yesterday, > and since we didn't want a double name, > nor two separate names, > I took the name of her family. Congratulations and best wishes to both of you! -- Wayne Brown | When your tail's in a crack, you improvise fwbrown@bellsouth.net | if you're good enough. Otherwise you give | your pelt to the trapper. e^(i*pi) = -1 -- Euler | -- John Myers Myers, Silverlock ==== You must attached the library. Please, try again with ... 1) Put the library in the stack. 2) Execute the command ATTACH with: 1: ATTACH and ENTER Miguel Angel CAPORINI HERK **************************************************************************** *** > Hey I wanted to move 2 of my own programmes to the flash memory on port 2 > (HP49G). It worked fine, but I saw that my ready instled programmes > (in port 0) disappeared from the lib menu! I can find them under 0: and > then see their lib. number, but I can't execute them anymore! > If I type the commands (or picks them from the CAT list) then I get an > error with XLIB (not defined or something). I tried to warm-start my hp, but then the commands disappeared from the > CAT menu! Is there anyway that I can correct this? Or do I need to remove the > libraries and transfer them and instl them again? ==== > You must attached the library. > Please, try again with ... > 1) Put the library in the stack. > 2) Execute the command ATTACH with: > 1: ATTACH and ENTER Still doesn't work! I better remove it and transfer it again. But does anybody have an idea why this can happen? I just copied one of my own programmes to the flash and then my libraries didn't work anymore! Can't you move your own programmes to the flash? Isn't that a safer place to keep them? Anders ==== Easy: .82 OFF HOME 'CASDIR' DUP PGDIR CRDIR é Side effect: it WAYS will start in { HOME } (MS-DOS like, 1st prompt = -- Karma Policer Rio de Janeiro Brazil ==== How long can an archived backup ( port 0 ) be maintained once I've removed the batteries from the cculator? thx again ( no mention of this in the manu....) ==== Port 0 is RAM, and should only last as long as the power supply capacitor holds up, typicly no more than a few hours, and in no case more than overnight. Flash (Port 2) on the other hand is EEPROM, and should last at least 10 years. hope this answers your question Bill ternate E-dress wtstorey@ieee.org.no.spam.please (Use the obvious) ==== holds overnight. years. An HP-48 typicly doesn't have any flash banks;-) Raymond ==== a.) how can I rearrange my variables ong the menu label line, ie rather than displaying A B C D E F I want to display F A E C D B? b.) how can I rename a variable and maintain its position on the menu display line thx. for l and any help..... =) ==== Make a llist of the names in the order you want and execute REORDER. Any unlisted names in that directory will be placed last. You can't, without something like ERABLE or a lot of fussing about. ==== BTW: The command is cled ORDER;-) That could be a nice little exercise for the user: - get the list - get the position of the wanted variable - recl the contents of the wanted var - purge the 'old' variable - create the new variable The remaining part of list manipulation is simple;-) Raymond ==== Right. REORDER is an HP49 command that does something else. ==== thx guys...I managed to work things out =) ==== Yes, l 6 digit addresses are rom pointers if the lib id, the last 3 digits in the address, is larger than 00F. Addresses with lib id 000 to 00F refer to the flashbanks. The entries which have a ~ as the first character in the name are rompointers who so have an entry in extable. I don't rely know why any of these visible commands does have an entry in extable, because MASD compiles UserRPL command rompointers just fine (using the x... notation). Maybe this has some historic reasons. Seems to be mainly CAS user commands... - Carsten ==== help to include/understand and to use appropriately to these sml jewels HP. 2) Very Happy Christmas!. Miguel Angel CAPORINI HERK ==== 95 Simple, created a new emulator state. It happens when I download files from Internet, then load they while connected. Strange, not? ==== I recently downloaded Hapaman from HPcc.org onto my 49G. I can't figure out how to execute it does anyone know how?? Thanxs in advance CID ==== To execute Hapaman, put it at the wl with closed eyes and a cigarette between its lipps ;-) Oops, that was another movie. ==== I've ready checked Eric's site, but couldn't find any Emulator for DOS. Is there any ? I can't recl... That's the reason I'm looking for the latest oldies (classics) for DOS environment like MatLab, MS Project 4.0, Harvard Project Manager 3.02, etc. I've just bought a used HP 200LX Pmtop PC and wanted to get either a 48 or 49 Emulator and/or Derive 4.11 for DOS... Any suggestions ? -- Carlos Lacroze BsAs, Argentina ==== Please, seek in the Eric Rechlin Web site (http://ca-on.hpcc.org): **************************************************************************** *** Emul48 (details) 171KB Another HP48 GX/SX emulator for DOS. By Warlock. 1998/12/09 Emul48 2.0 (details) 112KB Yet another HP48 GX/SX emulator for DOS. Unrelated to Emul48 by Warlock. By Olivier Marcoux (HP-Wizard). Before 1997/12/01 kc for DOS 2.2.2 (details) 364KB Programmable scientific cculator, using RPN (Reverse Polish Notation). Its behavior imitates a HP48/HP49 cculator. Works with re and complex numbers, numbers in other bases, and more. It is not an emulator, however; it does not need a ROM dump nor it has any code from the HP48/49's ROM. This is a MS-DOS version. By Eduardo M. Kinowski (H). 2000/12/09 **************************************************************************** *** Miguel Angel CAPORINI HERK **************************************************************************** *** ==== Here are my 2 major gripes about this cculator ( coming from the 32Sii ): No.1 Screen display is mediocre...often I'm forced to 'tilt to see' Unfortunately, this is breaking my work habits/flow and my 32Sii performed much better in this dept......=( Tried adjusting screen, but nothing works... No.2 b.) Slow, oh yeah this baby is slow. Results pop out late and sometimes I'm way ahead in my typing... very unnerving and definitely not like the 32Sii. I understand there's a lot more overhead in the 48G, but still..... Question: Has HP stopped making cculators together ( I mean the GOOD cculators ) ? thx to l again afa as my trusty and light 32Sii, it's a keeper for sure, so I won't be EBaying it. 48G is still a pretty kewl machine tho' despite it's shortcomings tho' =)) ==== Does anyone know where I can find the HP48GX rom, in other to download it ? Tracey ==== ? Please take a look at www.hpcc.org Raymond ==== How many kisses did you get Raymond? it ==== theeheeheehee ==== Idiots. gone http://www.shopping.hp.com/cgi-bin/hpdirect/shopping/scripts/generic_store/g eneric_subcategory_view.jsp?BV_SessionID=@@@@0678033475.1040251162@@@@&BV_En gineID=ccdcadchdfdeiglcfngcfkmdfondfgf.0&category=cculators&subcat1=graphi ==== Given that HP has seen fit not to fix the known bugs in the 49 G operating system, it comes as no surprise that they are discontinuing the product. In my humble opinion, HP's quest for profits has come at the expense of developing a quity product. For those of you who are to young to remember, HP's brand name was synonymous with quity. Now it seems as if their only go is to foist inferior products on a trusting public, l for the sake of improving their bottom line. In an attempt to get back into the cculator market, they are purveying a lackluster, overprice, graphing cculator. How sad! Just my $0.02 Johnet ==== The ID on my HP-49G is ID95. It used to work and then I upgraded my home computer. It has never worked since. I so tried my sons computer and that did not work either. My HP-48GX worked on both setups. The HP-49G fails the tests when conducting the I/O self tests. I would like to see if anyone has a methos or knows how to repair the I/O. Jeff **************************************************************************** **** anyone --- Checked by AVG anti-virus system (http://www.grisoft.com). ==== My 49 is ID93.., even older than ID94 (?). Still I never had any problems connecting it to a Mac or PC. Did that improper wiring appear later than the first HP49Gs? Wasn't it there right from the start? Greetings, Nick. ==== If you're using a different HP-to-seri cable and/or adapter than on your old setup, I'll bet you a dime that's the cause of the problem, because the same thing has happened to lotsa folks. Check out the Cable Table at http://holyjoe.org/cable.htm But no more than a dime, 'cause I've got no budget. ;-) -Joe- ==== OK. But it looked so simple... There's a program cled Assistente Virtu, I think, that is a guide for HP49G. You have to pay, and the demo version has only 5 of 30 chapters. The programmer used the SERI command to ensure a unique registration code to each one. And many non-hacker people don't know about the SERI command. ==== Yes, of course. You can use one of the IFM_* messages to take some action when the wanted field gets the focus, that is, when it is the current field. IFB48, for example, uses some message actions to let the user try and test list box fields *while* creating them! Note: This feature is unique to the HP-48 version of IFB. can For more information, a good place to look is www.hpcc.org Raymond ==== I don't know if constraining the Ci's to <= 1 would speed things up or not. But then you could minimize a dummy function since you'll be happy with any solution. So rely you'd just :-) have to write a program to generate the matrix for the model formulation and then feed that to the program simplex that's on www.hpcc.org. Like I said I haven't thought this through carefully so there might be some problems with details but overl I think this should work. I'm going to go give it a try now. (Maybe I should have done that *before* posting!) Mike Markowski ==== The marathons will be continued (no end in sight), and I'll try to continue the blending the best I can. (Though I prefer single mt, any Scott around here? ;-)) Greetings, Nick. ==== I have written a new version of my web navigator for HP49G : it includes more interactions and lows you to type in text inside the text areas. Remember that Navigator lows you to connect to the internet and view HTML files offline. I'm looking for beta-testers... Go to http://www.hp-sources.com/navigator/english.html to test it ! Yoann D.8esir. (yoanndesir@yahoo.com) ==== seems to be a cool software! Is there an HP-48GX version available? Raymond ==== not at the moment. Note that the pioneer series are somewhat higher, or wider if compared to the landscape form of a 15C;-) The 15C fits better in a shirt pocket. And, at this time, a 32SII costs nearly the same as a good 15C. Raymond ==== What I.C.'s are commonly used to program ROM cards? Are there schematics of programmers available? ==== There's a seri loopback test, well-described in the manu. You'll have to work out a way to short pins 2 and 3. Judicious use of your cable and the Mark One Straightened Paperclip should do it. Bill ==== not HP49