mm-451 Subject: Re: My quick math quide> One of the reasons I made the post Quick Math Guide to core error> issues was to have a handy reference. Having found myself floundering> a bit, I found myself looking back at it, wch is when I realized a> wle back that I'd wondered far astray, and I posted that I'd made a> mistake with my addition of y to an example from Rick Decker.> I then sat back, thought for a wle, and realized that possibly my> problem had to do with difficult concepts that so push the human brain> that most are not up to handling the mathematics as I'd been giving> it.> So I'm starting again, and looking for better ways to to explain.> P(m) = f^2((m^3 f^4 - 3m^2 f^2 + 3m) x^3 - 3(-1+mf^2 )x u^2 + u^3 f)> The form of the polynomial allows me to factor P(m) into> non-polynomial factors, and the factorization with those factors is> P(m) = (a_1 x + uf)(a_2 x + uf)(a_3 x + uf)> where the a's are roots of the following cubic:> a^3 + 3(-1+mf^2)a^2 - f^2(m^3 f^4 - 3m^2 f^2 + 3m).> I've adjusted those expressions several ways to try and make it easier> to underd.> So far those adjustment apparently haven't been very successful, and> now I'm beginning to realize that I need to underd human beings> better as abstractions. I need to figure out how their brains work.> That puts me back into study mode. I have to underd your mental> wiring to an even greater degree than I do now.> I have to figure you out.> Harris!Are you an old student of sosiology? Never stopped studying? Eight years?Throw a matamatical problem to sci.math, with lots of errors and sit backand study what happens?OK, but now is the time to stop, because you have been caught by your ownproblem. You have been obcessed by your problem stated and can't get out.I will state a really simple problem for you (your answer is crucial for meto continue looking in/on your treads)If A is a positive real number, what is sqrt(A^2)? === Subject: Re: Confusing natural logarithms> I'm just wondering, is it possible to solve ts equation without the> use of some number cruncng software?4.551 = X + 2e^(-0.5X)We only have one variable here, but I just can't seem to isolate it. > Avvfter computing away, i got a rough value of X being equal to 4.32Any help with ts or any resources you could send me to would be> greatly appreciated. .According to one person I know there *is* a closed form solution ifyou can put the equation in the formx = ye^y -- in ts case, AFAICT you'll want y=-0.5Xtheny = W(x) where W(x) is the Lambert W function also known ashttp://mathworld.wolfram.com/LambertsW-Function.htmlWhat is closed form, anyway?You can see an easy example at:http://www.anasoft.co.uk/EE/widlarlambert/ widlarlambert.htmlI'm about to post on an equation that's in the same form as yours,it just looks worse, so check out the thread. I have the solutionsfrom Maple and Mathematica, I just can't get to the x = ye^y form.-- === Subject: Re: Confusing natural logarithmsCorrectiony = W(x) where W(x) is the Lambert W function also known as ^^^^^^^ sorry, ProductLog === Subject: Topology helpI would be most appreciative if someone could please help with the followingLet h: S^1 -> S^1 (where S^1 is the unit circle in R^2) be continuous andantipode-preserving (i.e., h(-x) = -h(x) for all x in S^1) with h(b_0) =b_0. Show that h_* (h_*: [the fundamental group of S^1 at base pointb_0] -> [the fundamental group of S^1 at base point b_0] such that h_*([f])=[h of f], where [f] is the path homotopy class of f) carries agenerator of the fundamental group of S^1 at base point b_0 to an odd powerof itself.If it helps any, the Borsuk-Ulam theorem for S^2 is covered up to ts point === Subject: Lambert's W function (AKA ProductLog) problem:Please view in a fixed-width font like Courier.I've beat myself to death trying to get ts solved. I've got theMaple solution from a post where all algebraic manipulation stepswere skipped and I get the same result from Mathematica.A simple example can be found athttp://www.anasoft.co.uk/EE/widlarlambert/ widlarlambert.htmlNote, ts solution is not a common EE solution. Only a couple ofdesigners have pointed out the use of Lambert and only one of thosefigured it out mself. The other used Maple.Here's the bomb, though:Ie --> I sub eIs --> I sub sVbe --> V sub beVt --> V sub t4600 Ie + 2 Vbe = 6 / Vbe Ie = Is |exp(----) - 1| Vt /so Ie + Is Vbe = ln(--------) Vt Is2300 Ie + ln[(Ie + Is)/Is] Vt = 3 eq1the solution is: / (3/Vt + (2300 Is)/Vt) |2300 e Is| -2300 Is + ProductLog |-------------------------------| Vt Vt / Ie = ----------------------------------------------------------- 2300or / (3/Vt + (2300 Is)/Vt) |2300 e Is| ProductLog |-------------------------------| Vt - Is Vt / Ie = ----------------------------------------------------------- 2300where ProductLog is Lambert's W function.So, not satisfied with taking yes for an answer, and knowing that myalgebra skills need work, I set about beating myself to get eq1 inthe formx = ye^y so I could apply ts technique in the future withoutneeding special software.2300 Ie + ln[(Ie + Is)/Is] Vt = 3 eq1ln[(Ie + Is)/Is] Vt = 3 - 2300Ie 3 - 2300Ieln[(Ie + Is)/Is] = ------------ eq2 Vt***notice at ts early stage that the solution contains3/Vt + 2300Is/Vt = (3 + 2300 Is)/Vt ?I still haven't figured out how I'm going to get rid of that -sign in eq2. Moving on...Can't remember what to call ts other than inverse function --taking the inverse natural log of both sides, i.e., raising e to thepower of the lhs and rhs (??) / 3 - 2300 Is Ie + Is | ----------- |------- = Vt / Is eSo, using the link I supplied above as an example I figures that ifI set 3 - 2300 Is y = ----------- Vtand rearranged tngs, I'd get a solution. But when I rearrangetngs and substitute tngs, I end up getting y in the denominatorof the rhs. Inverting it just changes thex = y^-1.e^y form to x = ye^-y wch just swaps the terms in theexponent / 3 - 2300 Is | ----------- | Vt / to / 2300 Is - 3 | ----------- | Vt /and ts leads me to believe I'm heading down the garden pathbecause the final solution contains no negative sign in theexponent. If that's not an issue, I'm still hung up because I'vegone further and tngs just aren't looking right. I'd post my next2 steps, but I'm not sure if they're useful and that might just foultngs up.Would someone please help me get home on ts?-- === Subject: Re: Lambert's W function (AKA ProductLog) problem> 2300 Ie + ln[(Ie + Is)/Is] Vt = 3 eq1> the solution is:> / (3/Vt + (2300 Is)/Vt) > |2300 e Is|> -2300 Is + ProductLog |-------------------------------| Vt> Vt /> Ie = -----------------------------------------------------------> 2300Correct above. But below there is a small mistake: The last term in yournumerator shouldn't be in the numerator, so that the answer would correctlybe / (3/Vt + (2300 Is)/Vt) |2300 e Is| ProductLog |-------------------------------| Vt Vt / Ie = ----------------------------------------------- - Is 2300> or> / (3/Vt + (2300 Is)/Vt) > |2300 e Is|> ProductLog |-------------------------------| Vt - Is> Vt /> Ie = -----------------------------------------------------------> 2300> where ProductLog is Lambert's W function.> So, not satisfied with taking yes for an answer, and knowing that my> algebra skills need work, I set about beating myself to get eq1 in> the form> x = ye^y so I could apply ts technique in the future without> needing special software.> 2300 Ie + ln[(Ie + Is)/Is] Vt = 3 eq1> Would someone please help me get home on ts?OK, I'll show you what I did, in unpolished form.Begin by letting u denote the argument of the logarithm, Ie/Is + 1.Then in terms of u, the equation becomes2300 Is (u - 1) + Vt ln(u) = 32300 Is u + Vt ln(u) = 3 + 2300 Is2300 Is/Vt u + ln(u) = (3 + 2300 Is)/Vtwch is in the form a u + ln(u) = bwhere a = 2300 Is/Vt and b = (3 + 2300 Is)/Vt.To solve a u + ln(u) = b, apply the natural exponential function, exp, toboth sides:exp(a u + ln(u)) = exp(b)u exp(a u) = exp(b)Now, letting y = a u, we gety/a exp(y) = exp(b)y exp(y) = a exp(b), wch can now be solved using the Lambert Wfunction (wch I'll denote simply as W), givingy = W(a exp(b)).We're basically finished then. It's just a simple matter to work backthrough to obtain Ie. Anyway, here are the steps: a u = W(a exp(b)) u = 1/a W(a exp(b))Ie/Is + 1 = 1/a W(a exp(b)) Ie + Is = Is/a W(a exp(b)) Ie = Is/a W(a exp(b)) - IsFinally, just replace a by 2300 Is/Vt and b by (3 + 2300 Is)/Vt, andsimplify Is/a to Vt/2300, and you'll have the corrected form of theanswer I'd mentioned earlier. === Subject: Re: JSH: Does the math win yet?> It looks like there was more to adding in that y as a variable than> was realized as I saw the usual suspects replying--yet again--trying> to attack the mathematics, attacking algebra, as if they could still> convince all of you.However, the other shoe fell as I set y=0 givinga^2 - xa + 7x^2 = 0,soa = (1+/-sqrt(-27))x/2,and introducing c_1(x,y) and c_2(x,y) I then have(5(1-sqrt(-27))x/2 + c_1(x,y) + 7y)(5(1+sqrt(-27))x/2 + c_2(x,y) + 2y) = 7(25x^2 + 30xy + 2y^2)from my modification of Rick Decker's example.And as I mentioned in another post in ts thread, that modification doesn't work.Now I guess that Decker is a good enough mathematician to recognize> that now it's completely over, but I wonder about the others.Will they *dare* step out now despite the mathematics clearly showing> that I've been right all along?Oh well, that certainly is embarrassing given that my modification was wrong.You can add another variable, but it's not that simple to do. === Subject: Re: JSH: Does the math win yet?> It looks like there was more to adding in that y as a variable than> was realized as I saw the usual suspects replying--yet again--trying> to attack the mathematics, attacking algebra, as if they could still> convince all of you. However, the other shoe fell as I set y=0 giving a^2 - xa + 7x^2 = 0, so a = (1+/-sqrt(-27))x/2, and introducing c_1(x,y) and c_2(x,y) I then have (5(1-sqrt(-27))x/2 + c_1(x,y) + 7y)(5(1+sqrt(-27))x/2 + c_2(x,y) + 2y) = 7(25x^2 + 30xy + 2y^2)> > from my modification of Rick Decker's example.> And as I mentioned in another post in ts thread, that modification doesn't work. Now I guess that Decker is a good enough mathematician to recognize> that now it's completely over, but I wonder about the others. Will they *dare* step out now despite the mathematics clearly showing> that I've been right all along? Oh well, that certainly is embarrassing given that my modification was wrong.> You can add another variable, but it's not that simple to do.> Your so-called 'embarrassment' sounds suspicious. Too bad you discovered your error *after* condemning the'usual suspects' for attacking mathematics.--There are two tngs you must never attempt to prove: the unprovable -- and the obvious.-- --http://www.crbond.com === Subject: Re: JSH: My quick math quide Adjunct Assit Professor at the University of Montana.>>One of the reasons I made the post Quick Math Guide to core error>>issues was to have a handy reference. >Huh - I didn't see the Quick Math Guide.back in October.-- === Subject: Re: JSH: My quick math quide> One of the reasons I made the post Quick Math Guide to core error> issues was to have a handy reference. Having found myself floundering> a bit, I found myself looking back at it, wch is when I realized a> wle back that I'd wondered far astray, and I posted that I'd made a> mistake with my addition of y to an example from Rick Decker.I then sat back, thought for a wle, and realized that possibly my> problem had to do with difficult concepts that so push the human brain> that most are not up to handling the mathematics as I'd been giving> it.> Here's a different view on ts. Decker presented an examplewch showed in terms simple enough for you to underd thatyour method did not work. You agonized over ts for a wle,then decided to add in a new variable to your polynomial to avoid Decker's math. Ts failed. You were wrong and you admittedit in one of your infamous Oops! statements. So after an extended argument you admitted you were wrong. So then you sat back, thought for a wle and decided thatthe problem was, we mathematicians are not up to handling the mathematics. Doesn't ts strike you as just a wee bit strange? You are proved wrong about the math, you admit it, and then you conclude that *we* - not you - are not up to handling it ??? I mean, if maybe it had not happened previously many times over in the past 8years - if ts was an exception - it might be a reasonableconclusion. But it HAS happened repeatedly. You are provenwrong, you admit it, and then you conclude that WE are not capable of handling the math. Isn't your keyboard still measurably warm from typing in theword Oops! ???> So I'm starting again, and looking for better ways to to explain.> True, you are not good at explaining. But that is not the problem. As with Decker's example, we all understood what youwere saying. The problem was - and is - what you were saying was wrong. You don't need a better way to explain. You need abetter way to avoid mathematical errors.P(m) = f^2((m^3 f^4 - 3m^2 f^2 + 3m) x^3 - 3(-1+mf^2 )x u^2 + u^3 f)The form of the polynomial allows me to factor P(m) into> non-polynomial factors, and the factorization with those factors isP(m) = (a_1 x + uf)(a_2 x + uf)(a_3 x + uf)where the a's are roots of the following cubic:a^3 + 3(-1+mf^2)a^2 - f^2(m^3 f^4 - 3m^2 f^2 + 3m).I've adjusted those expressions several ways to try and make it easier> to underd.So far those adjustment apparently haven't been very successful, and> now I'm beginning to realize that I need to underd human beings> better as abstractions. I need to figure out how their brains work.> The lesson of the Decker example and many, many others is, mathematicians'brains work logically and tend to come to correct conclusions. Yoursdoes not. You are deluding yourself into tnking you are some kindof superhuman mutant. You're not. As proven repeatedly here, yourabilities, and certainly your knowledge, are well below that of theAVERAGE mathematician.> That puts me back into study mode. I have to underd your mental> wiring to an even greater degree than I do now.> Again you are pretending that you have a godlike, advanced intellect. If you did you would not make the mistakes that youdo, ranging from careless little algebra errors to deep misunderdingsof mathematical structures. A superhuman intellect would not havebeen proven wrong dozens of times over an 8-year period. Youare going more and more deeply into delusional tnking. > I have to figure you out.> OK, let's take your present polynomial example. I will assumehere that f is a prime, m and u are integers coprime to f, and xis a polynomial variable. You are factoring P(m) with respectto x with a factorization of the form P(m) = (a1*x + uf)*(a2*x + uf)*(a3*x + uf),where a1, a2, and a3 are algebraic integers wch are dependenton m. You now know, and we agree (since we said it in the first place)that in general a1/f is not an algebraic integer. After that we diverge. You conclude from ts that there isno way to factor f^2 out of P(m) so that, when the piecesare distributed among the factors above, the resulting expression has algebraic integer coefficients. You tnk theonly way to factor f^2 that will work is in the form f^2 = f*f*1.Ts causes you to believe that you must create a new ring of numbers to accommodate tngs like a1/f. We don't agree. a1/f is simply an algebraic number with nospecial properties. No new ring is necessary. The real core of the disagreement, however, is not abouta1/f. We agree that factoring f^2 out of the expression sothat one of the terms (ai + uf) is divided by f causes a problem. The f*f*1 factorization just does not work. The real core of the disagreement is that we say there is ANOTHER way to factor f^2 out of (a1*x + uf)*(a2*x + uf)*(a3*x + uf)in such a way that the resulting coefficients are all algebraic integers. Ts means that it is quite unnecessaryto create some new ring of numbers. You however do not accept that a factorization of the kind we describe can be done.I tnk it is again a matter of your not knowing enough mathto underd what we are saying. You refuse to learn thenecessary math. Then you blame us for being inadequatelywired or whatever. Wake up. The problem again, as it has always been, is notwith our wiring. It's with yours. Wake up and learn somemath! === Subject: Re: JSH: My quick math quideSo I'm starting again, and looking for better ways to to explain.> P(m) = f^2((m^3 f^4 - 3m^2 f^2 + 3m) x^3 - 3(-1+mf^2 )x u^2 + u^3 f)> Ts example is overly complicated. Consider tssimpler presentation of the core error proof.Lemma 1: Let P(m) be a polynomial with coefficients inA, the algebraic integers. Let each coefficient bedivisible (in A) by the algebraic integer f.Let P(m) = g_1(m) * g_2(m), with g_1(m) and g_2(m)functions from A to A. Then there exist s and tin A such that s*t=f; and for all m in A,s divides g_1(m) and t divides g_2(m). Core Error Proof Consider the function P(m,f,x) = mfx^2 +2fx + f^2 (m,f,x in A) [Among other possibilities We can consider ts as a polynomial in m, with parameters f and x, or a polynomial in x with parameters m and f. Ts only matters if we want to motivate the following] Consider the quadratic t^2 + 2t + mf (*) Let a_1(m,f) = 1 - sqrt(1-mf) and a_2(m,f) = 1 + sqrt(1-mf) be the negatives of the roots of (*). Some simple algebra gives P(m,f,x) = ( a_1(m,f) x + f ) ( a_2(m,f) x + f ) or (with a minor abuse of notation)letting P(m) = P(m,f,x), g_1(m) = a_1(m,f) x + fand g_2(m) = a_2(m,f) x + f P(m) = g_1(m) * g_2(m) Noting that P(m) can be considered a polynomial in mwith coefficients in A, all coefficients divisible by fwe apply lemma 1 and obtain: There exists s and t, such that s*t=f; andfor all m, s divides g_1(m) = a_1(m,f) x + ft divides g_2(m) = a_2(m,f) x + f Let m = 0. g_1(0) = f and g_2(0) = 2x + f.The only choice for s and t (up to units)is s=f and t=1. thus f divides (a_1(m,f) x + f)thus f divides a_1(m,f) Now specialize by letting m=1, f =3 3 divides a_1(1,3) = 1-sqrt(1-(1)(3)) = 1 - i sqrt(2) but (1- i sqrt(2))/3 is a root of 9x^2 - 6x + 4 At ts point the mathematical universe collapses Or does it, The problem is with Lemma 1.Wle ts holds for g_1 and g_2 polynomialsit is not true in general. Counterexamples areeasy to construct if g_1 and g_2 are not continuous.We get a more interesting example by lettingx=1 and f = 3 above. Let P(m) = 3m + 15, ts is divisible by 3. By simple algebra P(m) = 3m+15 = (4-sqrt(1-3m)) (4+sqrt(1-3m)) so let g_1(m) = (4-sqrt(1-3m)) and g_2(m) = (4+sqrt(1-3m)) P( -1) = 12, g_1( -1) = 2, g_2( -1) = 6P( -5) = 0, g_1( -5) = 0. g_2( -5) = 8P( -8) = -9, g_1( -8) = -1. g_2( -8) = 9P(-16) = -33, g_1(-16) = -3. g_2(-16) = 11 We note that wle P(m) is always divisible by3, the factor of 3 switches back and forthbetween g_1 and g_2. === Subject: Re: JSH: My quick math quide> So I'm starting again, and looking for better ways to to explain.> P(m) = f^2((m^3 f^4 - 3m^2 f^2 + 3m) x^3 - 3(-1+mf^2 )x u^2 + u^3 f)> Ts example is overly complicated. Consider ts> simpler presentation of the core error proof.Well at least you're trying so I guess I can look over your attempt tounderd. Lemma 1:> > Let P(m) be a polynomial with coefficients in> A, the algebraic integers. Let each coefficient be> divisible (in A) by the algebraic integer f.> Let P(m) = g_1(m) * g_2(m), with g_1(m) and g_2(m)> functions from A to A. Then there exist s and t> in A such that s*t=f; and for all m in A,> s divides g_1(m) and t divides g_2(m).That's not what I've been saying, and represents some interpretationson your part, wch, for the moment with you in particular, I'm readyto try and underd. In the past I'd get frustrated and angry, nowI just feel frustrated as I don't know how often I have to explain thesame tng, over, and over, and over again.You keep trying to *stay* in algebraic integers, when my point is thatyou're pushed out, as your claims for your Lemma 1 don't make sensein context with the actual argument that *I* have presented.So you lose it from the start.I need you to explain to me if you can accept the possibility of beingpushed out of the ring of algebraic integers, that is, can youcontemplate the possibility that given factors g_1(m) and g_2(m) ofP(m) like in your example that g_1(m) can NOT have any factors otherthan 1 and -1 in common with f *in the ring of algebraic integers*;although, P(m) has f as a factor?That is, can that idea make any sense to you at any level so that youcan start from that possibility? === Subject: Re: JSH: My quick math quide> That's not what I've been saying, and represents some interpretations> on your part, wch, for the moment with you in particular, I'm ready> to try and underd. In the past I'd get frustrated and angry, now> I just feel frustrated as I don't know how often I have to explain the> same tng, over, and over, and over again.Until you get it right! === Subject: Re: JSH: My quick math quideThat's not what I've been saying, and represents some interpretations> on your part, wch, for the moment with you in particular, I'm ready> to try and underd. In the past I'd get frustrated and angry, now> I just feel frustrated as I don't know how often I have to explain the> same tng, over, and over, and over again.It's easy to figure out how often you'll have to explain. You'll needto explain over and over until you realize your explanation is *wrong*-- wch probably never will happen. So you'd best get used to beingfrustrated, since it's likely to be a permanent condition for you.-- === Subject: Re: JSH: My quick math quide> One of the reasons I made the post Quick Math Guide to core error> issues was to have a handy reference. Having found myself floundering> a bit, I found myself looking back at it, wch is when I realized a> wle back that I'd wondered far astray, and I posted that I'd made a> mistake with my addition of y to an example from Rick Decker.I then sat back, thought for a wle, and realized that possibly my> problem had to do with difficult concepts that so push the human brain> that most are not up to handling the mathematics as I'd been giving> it.So I'm starting again, and looking for better ways to to explain.> P(m) = f^2((m^3 f^4 - 3m^2 f^2 + 3m) x^3 - 3(-1+mf^2 )x u^2 + u^3 f)The form of the polynomial allows me to factor P(m) into> non-polynomial factors, and the factorization with those factors isP(m) = (a_1 x + uf)(a_2 x + uf)(a_3 x + uf)> Bad notation. a_1, a_2 and a_3 are complicated functions.Better is a_1(x), a_2(x) and a_3(x). (even betteris a_1(x,m,f), a_2(x,m,f) a_3(x,m,f) )> where the a's are roots of the following cubic:a^3 + 3(-1+mf^2)a^2 - f^2(m^3 f^4 - 3m^2 f^2 + 3m).I've adjusted those expressions several ways to try and make it easier> to underd.> Since no one is disputing the results to ts point, youdon't have to make it easier to underd.Your problem is that you note that f^2 divides P(m) and correctlyconclude that f^2 must divide (a_1(x) + uf)(a_2(x) + uf)(a_3(x) + uf)Noting that a_1(0) = a_2(0) = 0 and a_3(0) != 0 you correctly note that**at x=0** the first and second terms are divisible by f and the trd termis coprime to f. You then incorrectly conclude that **for all x** the first and second termsare divisible by f and the trd term is coprime to f.Unsurprisingly, ts incorrect conclusion leads to a contradiction. - === Subject: Re: JSH: My quick math quide Adjunct Assit Professor at the University of Montana.P(m) = f^2((m^3 f^4 - 3m^2 f^2 + 3m) x^3 - 3(-1+mf^2 )x u^2 + u^3 f)The form of the polynomial allows me to factor P(m) into>> non-polynomial factors, and the factorization with those factors isP(m) = (a_1 x + uf)(a_2 x + uf)(a_3 x + uf)>> >Bad notation. a_1, a_2 and a_3 are complicated functions.>Better is a_1(x), a_2(x) and a_3(x). (even better>is a_1(x,m,f), a_2(x,m,f) a_3(x,m,f) )Actually, they depend on m and f (but, I tnk, not on u), but they donot depend on x; in the above formulation, for each value of m, f, u,we take the expression as a cubic polynomial in x and factor it into aproduct of linear terms with algebraic integer coefficients. There issome bit of work to justify the choice of cont terms, but that canbe done with the current polynomial... [.snip.]-- === Subject: Re: JSH: My quick math quide> One of the reasons I made the post Quick Math Guide to core error> issues was to have a handy reference. Having found myself floundering> a bit, I found myself looking back at it, wch is when I realized a> wle back that I'd wondered far astray, and I posted that I'd made a> mistake with my addition of y to an example from Rick Decker.I then sat back, thought for a wle, and realized that possibly my> problem had to do with difficult concepts that so push the human brain> that most are not up to handling the mathematics as I'd been giving> it.So I'm starting again, and looking for better ways to to explain.> P(m) = f^2((m^3 f^4 - 3m^2 f^2 + 3m) x^3 - 3(-1+mf^2 )x u^2 + u^3 f)The form of the polynomial allows me to factor P(m) into> non-polynomial factors, and the factorization with those factors isP(m) = (a_1 x + uf)(a_2 x + uf)(a_3 x + uf)where the a's are roots of the following cubic:a^3 + 3(-1+mf^2)a^2 - f^2(m^3 f^4 - 3m^2 f^2 + 3m).I've adjusted those expressions several ways to try and make it easier> to underd.So far those adjustment apparently haven't been very successful, and> now I'm beginning to realize that I need to underd human beings> better as abstractions. I need to figure out how their brains work.That puts me back into study mode. I have to underd your mental> wiring to an even greater degree than I do now.I have to figure you out.> That is your first mistake! The only brain whose operation you need worry about is your own. === Subject: Re: JSH: My quick math quide> I then sat back, thought for a wle, and realized that possibly my> problem had to do with difficult concepts that so push the human brain> that most are not up to handling the mathematics as I'd been giving> it.It's *your* brain that's the problem, not the *human brain*.> So I'm starting again, and looking for better ways to to explain.> P(m) = f^2((m^3 f^4 - 3m^2 f^2 + 3m) x^3 - 3(-1+mf^2 )x u^2 + u^3 f)> The form of the polynomial allows me to factor P(m) into> non-polynomial factors, and the factorization with those factors is> P(m) = (a_1 x + uf)(a_2 x + uf)(a_3 x + uf)> where the a's are roots of the following cubic:> a^3 + 3(-1+mf^2)a^2 - f^2(m^3 f^4 - 3m^2 f^2 + 3m).> I've adjusted those expressions several ways to try and make it easier> to underd.> So far those adjustment apparently haven't been very successful, and> now I'm beginning to realize that I need to underd human beings> better as abstractions. I need to figure out how their brains work.CORRECTION: You need to figure out how to get *your* brains to work.> That puts me back into study mode. I have to underd your mental> wiring to an even greater degree than I do now.CORRECTION: You need to get *your* wiring fixed. It has numerous faultyconnections. Do a Google search on and Oops!.> I have to figure you out.No you don't. You simply need to look at yourself. As Robert BurnsO wad some Pow'r the giftie gie us.To see oursels as others see us!--There are two tngs you must never attempt to prove: the unprovable --and the obvious.----http://www.crbond.com