I setup Maple 11 on windows 7   but the program does not save any data

Read and write English  is a strian!

Im trying to resolve a simple system of 2 ecuations and 2 incognits, but I dont know why maple return the same that I put in the instruction as the answer, I will put my procedure here:

theta[2]:=20;
theta[3]:=theta[4]-30;

Maple returns:
                              ...

    My first touch with Maple was in 1997,when I was in my undergraduate course.The software of maple was in three floppy disk.

    Since 2000,I becomes a teacher for mathematics .Now I am using it to compute the integrate,limits,etc.

To the world you may be one person,but to one person you may be the world!

Dears, How can i plot a parametric equations for an ellipse

x[i]=a*sin(t[i]),     y[i]=b*cos(t[i])      t[i] takes a numerical vaulues from - Pi to Pi.

i.e

i want to plot the values ,

(x[1], y[1]),

(x[2], y[2]),

.

.

(x[i], y[i])      where     i=1..100,

Dr. Amr

Dears. I want to evaluate the following expression numerically

G[i]=sum(Gama[i,k], k=1..100, k<>i),

where

Gama=((x[k]-x[i])*xdot[k]+(y[k]-y[i])*ydot[k])*dtheta[i]/((x[k]-x[i])^2+(y[k]-y[i])^2)^2

Dr. Amr

Hi,

I am trying to force the conversion of

to its cleaner looking

Anybody know how to do this in a straight-forward way? I've tried convert...

Hi,

When I solve this equation

Y(lambda):=_C1*sin(lambda*L);

solve(Y(lambda)=0,lambda);

Where _C1 and L are constants, I get 0.

But the solution of this equation which is easy is lambda=n*Pi/L where n=1,2,3,...

Why?

Thanks

I tried to build Pascal's triangle with powcrate as bellow described. It seem not worked and I don't know why (I am using Maple 12). Could you please help me. Thks a lot

Try to build Pascal's triangle with powcreate

Try with 2 different ways:

with u(n)  use subsop and zip to handle the list

with v(n)  use op and zip to handle the list

> restart;
> with(powseries);
 [compose, evalpow, inverse, multconst, multiply, negative, powadd, powcos, ...

This example from Mathematics. How it might translate to Maple?

t=RandomReal[{0,2Pi},20];

y=Sin[t]+.5Cos[t]+RandomReal[.1,20];

restart;gc()

a:=Matrix(1..5,1..5,(rand(1..1000))/1000)

b:=a*1000;

b[4,4] has the value 858.000000000000114   Why isn't this value 858. so that it matches the consistancy of the rest of the matrix??

Dear All,

I have a simple question: having a Matrix A, how to make a copy of this matrix called B, which modifications do not influence the values of Matrix A.

Simple example:

hey,

i am studying maths at uni and i have a test on maple tomorrow.

one of the revision questions is: "find a partial fraction expansion for p(x)/q(X) (given p and q) and extract the numerator of the 6th summand in the partial fraction expansion.

i defined p and q, and typed "convert(p/q,parfrac,x);" but that would not give me the result!

any help? please...