I have two issues.

if I say

int(exp(I*k*x),x=-Pi..Pi) assuming k::integer

Maple answers me with 

0

which is wrong, as one would expect the result to be a kronecker delta (k=0 is a type-integer for mapel). Is there a way to make Maple understand it is doing a mistake?

Related to this there is another point.

If I write

int(exp(I*(k-q)*x),x=-infinity..infinity)

Maple does not write (or convert) the result...

In the name of God

Dear my friends

Hi

 I have a function as the following:

 temp:=phi(Lambda(tau, 0), tau, 0)+((D[1](phi))(Lambda(tau, 0), tau, 0)*(D[2](Lambda))(tau, 0)+(D[3](phi))(Lambda(tau, 0), tau, 0))*q;

 I have equivalent functions for Lambda(tau,0) and phi(Lambda(tau,0),tau,0) as the following:

 c[0](tau) instead of Lambda(tau,0)

y[0](c[0](tau),tau) instead of phi(Lambda(tau,0),tau,0)

Is there a simple way to allow for the input of a list of equations into a procedure?

I have these three equations:

f[1] := x[2]+3*x[4]+x[5]-x[6]=2;
f[2] := x[1]+2*x[2]-x[3]+x[4]+3*x[6]+x[7]=13;
f[3] := x[1]+x[2]-3*x[3]-x[4]+x[5]-x[8]=26;

Ideally I would want something like proc([f[1],f[2],f[3]]). Is something like this possible?

P.S. I have tried proc(f::algebraic) but got the error message:

Error, invalid input:...

I try to get the answer of int by newton cotes method,

but after runnig,it gives a complex number for the answer.

I think its because of singular point.

Is there any method which find singulaitis and make integarl to some parts without that singular point automatically?

thanks

i am wondering if anyone can give me some examples of functions that would help show the relationship between smooth functions and convergence of the fourier series so that i can graph these functions using maple over the period [-Pi,Pi]

Caitlin

I have 2 equations... f[1] := x[2]+x[3]+x[5]+x[6]=16; and f[2] := x[1]+x[2]-x[3]+x[4]+3*x[6]+x[7]=28; 

Is there a method that will allow me to count the number of equations?

Is there a method to display the indeterminants or variables which are in the equations i.e x[1],x[2],x[3],x[4],x[5],x[6],x[7]?

Is there a method to find the maximum indeterminant or variable from both the equations i.e x[7]?

Dear Maple helpers. Here a toy-version of my huge problems.

I want to do following:

1). Assuming (0 <a=1/2,  b=1/2, c=1/2)

I want  to plot (the surface of)  

f(x,y,z) = x^a * y^b * z^c   in the space (x,y,z) for

f(x,y,z)=50, 100 and 150, and with  x=0..40 ,  y=0..40, z=0..40

I tried with plot3d but it is not possible.  How could I do with Maple 14?...

I have a problem changing a maple matrix to a matlab code without getting the error

Error, (in PrintTarget) assigning to a long list, please use Arrays ( I don't know how to use arrays ) thanks Big in advance

Here is my code:

> J[p1] := Matrix(3, 4, {(1, 1) = -sin(theta[1](t))*`&Delta;x`[1]-cos(theta[1](t))*`&Delta;z`[1], (1, 2) = 0, (1, 3) = 0, (1, 4) = 0, (2, 1) = cos(theta[1](t))*`&Delta;x`[1]-sin(theta[1](t))*`&Delta;z`[1], (2, 2...

Integrals.mw

I tried solving the following equation but when i do i get

> solve((500*.87)*(1-(1/x)^.2385)-(288*(x^.3174-1))/(.85), x);

Warning, solutions may have been lost

Is it not possible to solve for highly nonlinear equations ?

Hola;

one short question:

 How to apply random permutations of data within an matrix.

 --Shuffle-->

It was mentioned in the post that Maple can not solve some oscillatory integrals, mainly this one

int(cos(log(x)/x), x = 0 .. 1)

int(cos(log(x)/x), x = .001 .. 1) is okay

but we find that when we go from 0.0001 .. 1 Maple endlessly evaluates.  It seems as soon as we hit that 4th decimal there appears a problem. 

int(cos(log(x)/x), x = .00001 .. 0.0001) won't work either.  Oh, this is...

i want to use numerical technique to solve non linear ode.

are there some built in numerical techniques in maple13.?

kindly name few and there syntax.

i have seen that we can solve linear ode numerically. how can i check that what technique does maple use?

Dear all,

I have functions f(x,y) and g(x,y).

How can I plot the dependencies of f on g for different x and y?

If I had only f(x) and g(x), than I could use plot[parameric] like it's shown in Help page

plot([sin(t), cos(t), t=0..Pi]);

I would prefer 2D plot, if possible.

Hello,

I want to use the values of the solutions of

sol := solve({x+y=a, x-y=b}, {x,y});

I would like to be able to continue some symbolic computationg, for example

dernier:= sol[1]/sol[2];

but I get an error message.

How can I take only the values of x (and not the expression x= something) to compute, for example "dernier"?

Thanks in advance,