Hi everybody:

I am running an application which involves solving symbolically an ODE over a three segment domain and then adjusting the constants of integration to satisfy boundary/continuity conditions. I wrote the code in document mode and noticed that it takes very long to execute. I resurrected the old worksheet-based code which does basically the same thing and it runs much faster. Of course the code in both cases (due to evolution of both software and user) is not exactly the same.

how woulud i plot this for maple 11

2(x^2+y^2)^2=25(x^2-Y^2)

I tried to solve a PDE-BVP :

D[epsilon]*diff(C[a](z,t),z,z$2)-(lambda)*R*K-S=0;

BC C[a](0,t)=C, (d(C[a])/dz)(z=-z0)=0;

Request to guide me how to write maple code for Boundary conditions.

Hello,

I am looking for plotting a function which is the localisation of a point in space.

This vector can be write as [X(theta1,theta2,theta3),Y(theta1,theta2,theta3),Z(theta1,theta2,theta3)].

How can I plot all possible point in space when parameters theta1 theta2 theta3 vary to -Pi .. Pi without loop (for while) ?

I tried :

plot3d([X,Y,Z,theta1=-Pi..Pi,theta2=-Pi..Pi,theta3=-Pi..Pi],-10..10,-10..10,-10..10]

Maple does not find the product
product((k+a)*(k+b)/((k+c)*(k+d)), k = 1 .. infinity) assuming a > 0, b > 0, c > 0, d > 0, a+b = c+d;

                         GAMMA(c) GAMMA(d) infinity
                         ----------------------------------

Just curious if there are any best upgrades to a computer to improve the speed of Maple.  Here's my issue.

It could be perhaps that I am just being bogged down by my video card.  When I have many plot displays open or a large plot structure with many points Maple really bogs down.  I think it's most likely my video card but I would like to hear some thoughts on this. 

It is a fairly old computer by todays standards ( single...

Dears,  I have a system of linear equation A*X=B   where A matrix 607x400  & X vector  400x1 and B vector 400x1

where A not square matrix. To sove,  I do

(A^T)*A*X=(A^T)*B,

Let   D= (A^T)*A        D  square matrix

then

D*X=(A^T)*B,

the solution is

X= (D^-1)*(A^T)*B.

could any one help me to do this by maple and cut the resluts in...

How do I graph several level curves of the function f(x,y) = ln xy with maple.

I am trying to get maple to print output whilst running a procedure. This works fine with Maple 11 under Mac OS 10.4, and it also works with Maple 11 under Mac OS 10.6 when using the command-line version.  However, it does not work when running the GUI version of Maple 11 under Mac OS 10.6.  Has anyone found a way around this problem?

In the name of God

Dear my friends

Hi

I want to calculate the high-order approximant of taylor series or expansion of f(x) as followings;

g:=taylor(f(x),x=1,60);

g:=expand(f(x));

in which f(x) is a very large expression with respect to x. for example, assume that

f:=x->sum(n*x*sin(n*x),n=1..1000);
g:=taylor(f(x),x=1..60);
Above...

I am working with a 3 dimensional vector partial diff eq that resembles the Helmholtz equation, but there is a curl of the vecotr field as the middle term.

ie-->LaPlacian(F)+2beta*gamma^2*curl(F)+gamma^2*F = 0

Anyone have knowledge or references for me to look over to solve this equation?

I am looking to use MapleSim in my MSEE Thesis project. I need to capture input from a hardware system, then use that data to drive a model in MapleSim, using MapleSim as a 3D kinematic model.

I have been using Python for most of my work so far, so that would be a preferred language, but I am also comfortable with C++, it just takes longer.

I am brand new to MapleSim (I have not even received it yet), so if there are some documents you could point me to, then that would be just great!

Hi, I'm new to Maple and I'm trying to use it in some frequency domain convolutions analysis. At the moment, I'm just tying to organize my work and for this I need to perform some simple variable changes on multiple integrals.

I've started like this: 

> conv:= (x,h,t,tau) -> unapply(int(x(tau)*h(t-tau),tau),t);

> Y[1]:=omega->H(omega)*X(omega);

> with(IntegrationTools):

> Y[2]:=conv(Y[1],Y[1],omega,sigma1);

Hi,

I'm new to Maple.

I'm trying to solve the folllowing systems of equations:

Y= 2x^2-5x+ 3, y= x^3 + 4x -3

However when I try and solve it I dont seem to get a straight answer for X and Y. I've been reading other examples and they all give plain values for x and y.

hello everybody

I need help please

in some forum i found this problem

find a number "abcdefghijklmnopqrstuvwxyzâôîé" with 30 digits if we renverse it

it will be equal 

(éîôâzyxwvutsrqponmlkjihgfedcba)/4