## how I can Pdsolve this equation?...

is possible to solvethis equation via maple?

hank you

 >
 >
 (1)
 >
 (2)
 >

Boundary condition:

 >

#####################################

INITIAL CONDITIONS:

 >
 (3)

## solving couple pde in maple?...

Is possible to solve this differential equation by maple?

thaks...

## Problem with graphics when using eBookTools...

Hi,

I'm using the eBookTools package to convert a .mw file as a chapter into a PDF file. However, a problem arises when I convert a document with a few repeated plotting commands (such as plot(x^2)). The issue is that in the final PDF the images of the various plots overlap, and that the individual plots can't be clearly seen. Is there a resolution to this?

Thanks,
Bart

## when to use sum vs. SumTools?...

Is package SumTools supposed to be a superset of the sum command in Maple? Or is it supposed to be a complementary to it? When should one use SumTools vs. sum?

The help on SumTools says

The SumTools package contains commands that help find closed forms of definite and indefinite sums. The package consists of three commands and three subpackages.

But does not make it clear when to use it vs. sum or what is its relation to sum command.

I am asking because on one example, sum is able to give an answer, while SumTools can't. I have expected the other way, where if sum failed, then one will try SumTools.

```restart;
sum(1/n*sin(n*x),n=1..infinity) assuming 0<x,x<Pi```

```SumTools:-IndefiniteSummation(1/n*sin(n*x),n=1..infinity) assuming 0<x, x<Pi
```

## Problem using with(CodeGeneration)...

Hello,

I'm a long-time Maple user and have used the CodeGeneration package in the past, but with a recent download of Maple 2018, I'm now getting an error I have never gotten before. Even when I do something simple (see below, for example), I get an error that reads "Error, (in clear) argument `` is incorrect or out of order". And I get this error no matter which language I choose. Any help would be much appreciated.

> with(CodeGeneration)

> R(exp(x))

Thanks!

## how I can find solutions for non linear equations ...

how I can find solutions for non linear equations.

I want to find non zero solution.

thank you

ZAH.mw

Maple Worksheet - Error

Failed to load the worksheet /maplenet/convert/ZAH.mw .

## help me to solve the eqution by ritz methode codes...

how i can solve the eqution by ritz methode codes?

## 2D weirdness (Maple 2018.2 OSX)...

Here is a simple procedure that works fine if entered using 1D Maple input
> Q:=proc(x)
sin(x)
end proc;
but if you use 2D math input
> q:=proc(x)
sin(x);

end proc;

Error, unterminated procedure
Typesetting:-mambiguous(qAssignTypesetting:-mambiguous(

procApplyFunction(x) sinApplyFunction(x),

Typesetting:-merror("unterminated procedure")))
Error, unable to parse
Typesetting:-mambiguous(  Typesetting:-mambiguous(end,

Typesetting:-merror("unable to parse")) procsemi)

Ouch! But to confuse things further the following procedures may be entered using 2D math and work fine:
>H := proc (x) x^2*sin(x) end proc;
>K := proc (x) sin(x^2) end proc;
Doesn't make any sense to me. Perhaps 2D math is not ready for prime time?

## Multiple Execution of Maple Code with a Varied Par...

Hi!

I have a rather long Maple code and want it to be executed multiple times with a parameter changed each time.

Surely this can be done with the loop structure, but it seems the whole loop structure must be contained into one single execution group, which makes it to be a little inconvenient, since the code is too long.

So is there any alternative way to realize this utility?

Best regard and thanks!

## polylog vs. dilog...

This is not a problem per se, but more to understand the background.

restart;

f := polylog(2, -x);

int(f/(x+1), x);

convert(f, dilog);

int(%/(x+1), x)

The integration of the polylog maple is not capable of doing, but after converting to dilog it finds an anti derivative.

That leads to the question, why is dilog as a separate to polylog(2,*) implemented anyway? Why couldn't it all be done with the more general polylog function?

I'm also wondering why maple has difficulties to integrate

int(dilog(x+1)/(x+a),x)

for general a.

## ImportMatrix Kernel Lost...

Using Maple 2018.2.1, I'm receiving a lost kernel message when importing the attached data file with ImportMatrix. I traced the issue to a "*" symbol at the end of the file but would have expected this to cause an error message (if any error at all) instead of the connection to the kernel to be lost. Is this a bug or am I misunderstanding the usage of ImportMatrix?

test.mw

test2.txt

## Can't solve ODE...

I try to solve ODE with conditions, but it give answer only without conditions:

SOT.mw

Thank you.

## How to rectify the error in the ODE problem....

Dear authors,
How to solve this ode problem.

In this problem the boundary condition is

Note: F=g in our problem.

eta approaches N.

Thank you.

Executing the entire worksheet several times I obtain random results for Threads:-Seq

 > restart;
 > N:=10^3; f:= (a,b) -> add(evalf(j), j=a..b);
 (1)
 > seq(f(k*N/4+1,(k+1)*N/4), k=0..3);
 (2)
 (3)
 (4)
 (5)
 >

## is possible to solve this pde via maple?...

is possible to solve this pde via maple?

 >
 >
 (1)
 >