Hi,

Say for a 126 by 18 symbolic matrix, substituting numerical values into the matrix DD1 takes about 10 seconds (using time() );

for a 62 by 16 matrix, take just about 1/5 second.

By when the matrix is about 254 by 20, it take much longer! More than a minute!

I never actually waited how long, but I am wondering if there is something wrong? Am I using the right command?

Say the matrix is DD1 with numpar:=[x=0.3,y=0.2,z=0.98,....]

HI, I have a doubt to how to execute the program with an example. gaussseidel:= proc (A,b,x,p)  local i, j, m, soma, e, g, C,   xk:= Vector(n),  k:=0;  for i from 1 to n do   g[i]:= b[i]/a[i,i];  for j from 1 to n do   if i=j then     C[i,j]:= 0;  else   C[i,j]:= - a[i,j]/a[i,i];  end if;  end do;  end do ;  while  (x - x0) > p do  for i from 1 to n do   soma:=...

I'm really struggling to do some linear algebra over Galois fields in Maple with LinearAlgebra package. I looked at the documentation for LinearAlgebra[Nodular] and LinearAlgebra[Generic], but i failed to get even simple examples to work. For instance as simple example over GF(2) I tried the following code which in my understanding should return the vector [1,1,1], instead this however simply no result seemt to be computed:

restart;
#with(LinearAlgebra[Generic]):

How can I install package "gravitational" for system Win7 (maple 15 and maple16)?

I made 3 years ago a SOKOBAN game using Maple for my Math/Programming class.

Here is a video of the application:

http://www.youtube.com/watch?v=l00l82_LK2Y

Have a nice day!

I am trying to shade the area under an arc between it and the x-axis but I can't get it to work. I have used "filled=true". According to my interpretation of the plot tools help page it should work. Any suggestions. Thanks much!

How do i solve this PDE with initial and boundary condition

1. δθ/δζ = δ^2θ/δy^2

At y=0, δθ/δy=0

At y=1, δθ/δy=-µ

At ζ=0, θ=1

Dear Maple users

The Statistics package contain a Histogram command which can produce a linegraph (or what you call it). Ex:

 

with(Statistics):

A:=[3,5,7,2,11,2,1,10,6,15]:

Histogram(A,discrete)

 

It will calculate the frequency of each of the outcomes as they appear in the list and will plot them accordingly: 

How to prove that 

sum(binomial(n, r)*binomial(k+r, n), r = 0 .. n) = sum(binomial(n, r)*binomial(k, r)*2^r, r = 0 .. n)?

Maple calculates the LHS and RHS, but I cannot compare these with Maple for each n::posint and each k::posint s. t. k>= n. The question was asked in Mathematics SE. I don't understand whether it is answered there.

I am trying to see if Maple can help me find a closed form for an infinite series. I do this:

 

restart:

s:=Sum(n^2/((Pi^2*n^2+beta^2*epsilon^2)*(exp(n))^4), n = 1 .. infinity);

value(s);

 

Maple returns with:

Find a(n) of sequence 1 , 2 , 2 , 3 , 6 , 5 , 30 , 11 ,...

Dear sir, 

 i want to plot labelled contour plot in maple 13, 

here is the code

labelledcontourplot(x^3-y^2,x=-3..3,y=-3..2,axes=boxed);

thanks 

Hello everyone,

restart:with(PDEtools):with(plots):

sys := {diff(T(x, t), t) = diff(T(x, t), x, x)+(diff(u(x, t), x))^2, diff(u(x, t), t) = diff(u(x, t), x, x)};

PDE:={diff(u(x,t),t)=diff(u(x,t),x$2),diff(T(x, t), t) = diff(T2(x,t), x)+(diff(u(x, t), x))^2,diff(T(x, t), x)=T2(x,t)};

BCs := {u(0,t)=sin(t), u(10,t)=0,T(0,t)=1, T(10,t)=0,u(x,0)=0,T(x,0)=0};

pds2 := pdsolve(PDE, BCs, numeric, spacestep=1/50);

I just want to plot T2(x,t) vs t for x=0.

Sorry to bother you again. I want my computations(results) to carry/have more decimal places so that I can choose how many decimal places to show myself. This is because, my result is always displayed in 9 d.p but I want more decimal places to be displayed. Just like the way we change the way maple display matrix in-line with command interface(rtablesize= N), is there a similar way i can do the decimal place thing?

Secondly, how can i suppress the value A amd B from...

Help please...

How can I solve for