## solution of coupled boundary value problem...

No that way I could have chosen infinity at 10 or lower values also. f ' will go from 0 to 0 through positive values only. But how can I claim then that my solution is infinity independent. Because if I change the value of infinity whole solution changes.

Moreover at 15.6 the value of f ' is sufficiently close to 0 but value of g (0) is about 0.15 which is far greater than 0. g (0) goes to zero at about eta=25.

So  can I get rid of the problem?

## congruent not diagonalizing...

I apologize for revisiting this question many months later. What I meant with the example was not diagonalizing but congruence. For a field that is not characteristic 2, a symmetric matrix is congruent to a diagonal matrix.

with(LinearAlgebra[Modular]);

A:=Matrix([[2,2,2],[2,0,1],[2,1,0]]);

C:=Matrix([[1,0,0],[2,1,0],[1,1,1]]);

CC:=Transpose(3,C);

C.A.CC mod 3;

The output is Diag(2,1,0)

The invariant in this case is 2...

## table of content...

Is there a way to insert a table of content with the headers of the sections at the beginning of the document? (like in MS Word)

It should be updated, if I create a new section or change the header.

## Unable to do "Save As"...

My operating system is Mac OS X 10.6.4.   Lately Maple has been EXTREMELY tempermental in letting me "Save As a Worksheet"......I'm NOT talking about the "classic worksheet"

I try to save a file with a different name using "Save As A Worksheet" and Maple goes through the whole "Saving Worksheet" routine BUT NO NEW NAMED file is made!

This is very frustrating.....since it wasn't like this before.

Any ideas?

Jim

## systemofodes...

Hi! I am trying to solve this system:

but I have a problem.

## Converting Maple code to C or Fortran code...

Hi everybody:

I have the following problem. I obtained an asymptotic solution of a hard problem. The final result is a Maple procedure with five arguments; this function has hundred of term and it works beatifully in Maple. However, we need to convert this solution to C or Fortran code and  I am not able to do it.

After the sentence: Fortan(functionname, optimize, output="filename")

Error, (in PrintTarget) assigning...

## Linear PDE system, help!...

Hi! I have a problem with the total PDE linear system:

F=F(x,y,z,w,h);

X1(F)=F[x]+F[y]+F[z]+F[w]=0;

X2(F)=x*F[x]+y*F[y]+z*F[z]+w*F[w] - h*F[h]=0;

X3(F)=x^2*F[x]+y^2*F[y]+z^2*F[z]+w^2*F[w] - ((z-x)*h+C*(w-y)/(z-x))F[h]=0;  (C=const)

The Poisson brackets are:

[X1,X2]=X1, [X1,X3]=2*X2, [X2,X3]=X3.

I'v tried to solve this system with pdsolve, but F=const is the only Maple's answer. But I am sure that this system has a...

## how do i solve the problems in physcis packge...

Dear friends,

The Physics package in Maple is a good tool for quantum physics. However, I came across some problems with the package when I performed a computation. Please see the figure.

The left-hand code (last two lines) shows Amx.Amy.Ket(x,1,1)=”-Ket(x,0,0)”. However, I believe that the answer is wrong; it seems that the negative sign should not be here.

The “am.Ket(B,4)=2ket(B,3)”

## How do I make a monochrome plot for two equations,...

I'm going to put this plot into LaTeX, so it'd be nice if the font is similar. Both equations are functions of one variable.

Is there a nice, concise command to do this? Additionally, what's the easiest way to export this graph into a format useable by pdfLaTeX?

Thanks so much!

I'm running Maple 14, if that matters.

## How to calculate...

the integral
>int(1/x^2-cot(x)/x,x=0..infinity,CauchyPrincipalValue);
with Maple ?
Stars predict it equals Pi/2. Maple 13 easily cracks the integral
>int(tan(x)/x,x=0..infinity,CauchyPrincipalValue)=Pi/2.

## NLPSolve in Matrix Form - variable problem dimensi...

Hello,

I ran into problems while trying to write the input to NLPSolve in the Matrix Form because the problem dimensions depend on the input data. Take the following example:

max f(x)           <- f a nonlinear function of x

st: x1+x2+x3+x4                     ≤ b

## Interactive use of Maple 3D plots within Power Poi...

Has anyone successfully integrated a 3D plot from Maple (X3D?) into PowerPoint that can be manipulated within a presentation?  I have read an article on Tecplot's (another graphics software package) web site that explains how to export a Tecplot file as an X3D file and then embedding the X3D file into PowerPoint using a X3D plug-in.  See below:

The X3D plot can...

## Error message - can't edit!...

Hi,

This error has occured for me several times, and I can't seem to find any way around it.

When I make an error in either the algorithm or especially in the grading part, I sometimes get something like this:

Part 2: The character ; cannot be used in a formula.

...or some other error message. I can figure out what I've done wrong and how I might fix it, but I cannot edit the question. Whenever I click on "edit", all I get is the error message....

## Convert combinat:-permute in Maple to Matlab...

Hello,

I would like to convert this Maple code into Matlab. Matlab() gives me "Warning, the function names {`\$`} are not recognized in the target language"

Here is the code:
for d1 from 2 to r-1 do

for l to d1 do Z[d1][l] := combinat:-permute([`\$`(0, d1-l), `\$`(1, l)]);

K[d1][l] := factorial(d1)/(factorial(l)*factorial(d1-l))

end do

end do; Z[2][1][1][1]; K[2][1]

Thanks and cheers :)