## How can i add "FourierSeries" package to maple 16...

Hi
when I use this package, maple makes error like bellow. what is the problem ? thank u

## Help IntegrationTools Change...

Hello everyone

IntegrationTools:-Change(int(3*x*sqrt(x+8), x))

I want to convert that primitive to a primitive like this: (2/3)*(Int(u^2*(u^2-8), u)) and Error, (in IntegrationTools:-Change) invalid boolean expression: 1

Help_integrationTools.mw

## Combining algebraic expression...

Hi,

It might be a really silly question, but I am wondering is it possible to simplify expression like this

. Just by looking it we know that we can write it in the form of (a+b)^2+c^2. This is the basic exmaple I come up with. I have very lengthy expressions in maple, which can be factorize like this, but factor command will not work as it will try to factorize entire expression. So I am wondering is it doable in maple or I have to do it manually by collecting terms and check whether they can be factorize or not.

With Regards

sunit

## Exporting maple plot into MATLAB...

Hi every one

I'm having some plots in maple, but the layout is not pretty enough, I want export in to MATLAB. Does some one please have an idea on how I can go about it?.

I'm using Maple 16

Thank you in anticipation

## Solve a PDE with a known solution...

Can anyone help me to find a solution to  for the attached partial differential equation ?

I want to find a general solution to a partial differential equation by assuming that I know one solution, called , and trying to find another solution  by assuming that the general solution in the form of . I want to restrict the second solution to be in the form of  so that it satisfies the PDE, and is a function of  times . The latter makes error as the maple identifies that the function  depends on only one variable . Could you please help me to find a solution for  in the form ?

Also, I have trouble with defining the operator Do in the attached file.  When it operates on , maple gives D. It is not clear for me that whether this derivative is with respect to  or . I need is to define Do in a way so that the derivatives are correctly taken with respect to different separate variables.

Thank you for your help,

## Solve a system of partial differential equations w...

Can anyone help me to solve the attached system of PDEs with a given expression for the HINT such as

I am not able to set such an arbitray HINT function for system of PDEs.

SysPDE_HINT.mw

Thank you,

## How do I find the eigenvalues of a symbolic matrix...

I am currently working on a project that generates a set of matrices and I want to find their eigenvalues, but using the inbuilt Maple engine takes too long. The problem is that whenever I try to use the Matlab[eig] command I get the error:

Error, (in Matlab:-setvar) unable to store '-3.*Re(X)' when datatype=float[8]
I found out that solving symbolic matrices in MATLAB requires first defining symbols with the "sym" command but I've been unable to do that in Maple.

## How to get rid of 1.0 in numerical and symbolic ca...

Hi,

This might be a very silly question but it is troubling me a little bit and that's why I need to post it. During the combination of symbolic and numerical comutation this '1.0' is appearing as a coefficient for the variables whose coeffecient is just '1'. It's quite annoying as sometimes if I have to collect coefficient of a variable for an example exp(I*omega*t) then I have to write exp(1.I*omega*t), so chances of making mistake is higher. Please find the attached worksheet for this. In eq(4), you can easily see that for x[3](t) and x[1](t) this '1.0' appears in front of the variables.

I really appreciate  if someone can help me out of this.

With Regards

Sunitquestion.mw

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## Convert expression to LaTeX...

How to convert expression below to LaTex:  $\lim _{x \rightarrow 2} \frac{2}{x+3}$

And How to convert expression below to LaTex:  $\int_{2}^{3} \frac{1}{x^{2}+2} d x$

file test: newLaTex.mw

## Incorrect definite integration of hyperbolic funct...

Hi Guys,

I am trying to intgrate a function involving hyperbolic functions in a range of 0 to 1 and it is giving me very large value of 10^94. However, on doing integration terms terms i can see that some large terms involving 10^191 cancel out with each other and I can have a fnite value of this integration. It would be really helpful if someone can help me out why it is happening with int function and how can I solve this case involving hyperbolic function. For reference maple file is attached. Thanks in advance and much appreciated.

With Regards

Sunit

question.mw

## How to simplify multiple definite integrals...

Hi Guys,

I need help regarding simplifying definite integrals. I have following expression

As we can notice the limit for each integral is same, so I should be able to take these integral limit outside. I am trying to use collect and simplify, but both of these command are not working. It would be really helpful for me if I can get the solution for it.

Please find the attached example sheet also.example.mw

With Regards

Sunit

## How to use factor elementwise?...

Hi Guys,

It might be a very basic question, but I am struggling with it for a quite a time.  I have an expression in a form of

f(x)=h(x)+g(x);

and I want to use factor operation elementwise, i.e., it can individually act on h(x) and can give me

f(x)=h1(x)*h2(x)+g1(x)*g2(x). But whenever I am putting factor operation with elementwise it is not giving me desired answer. It would be really helpful and great if someone can help me out.

I am attaching maple sheet for reference also.

Thanks in advance and regards

## Solving a Quadratic Diophantine Equation with 3 va...

How do I find integer solutions to this non-linear equation:

8= 7(x^2+y^2+z^2)+2x+4y-8z.

Tried isolve and it wasn't working. (I guess too many variables?)

Also, if f(x,y,z) is the RHS, how do I write a loop that finds integer solutions to f(x,y,z)=c for |x|,|y|,|z|< N, say?

## error: fsolve unrecognized form...

Hello,

I don't understand why Maple gives me the following error:

Error, (in fsolve/Iterators) unrecognized form

The full maple file:

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Thank you!