Does the following error message mean that the only way to remove RealDomain is to exit Maple & then start a new session?

 unwith(RealDomain):

hi and thanks for your comment, is it possible to establish some dir as default currentdir (independently of how maple is started)?. How can I know which maple procedures will use currentdir as default directory? Perhaps all of them? If not, what about the others? what does "home directory" mean in maple context? thanks again

Hi all,

Here is a description to the gamma density function:

http://en.wikipedia.org/wiki/Gamma_distribution

Basically, I am studying how to numerically integrate against the
gamma density function for kappa < 1.

As you can see, the key difficulty for the kappa < 1 case is that in
the integrand there is a term

x^(kappa-1)

and we have to integrate starting from x=0 all the way to x= +
infinity...

I use the GraphTheory package to draw graphs with DrawGraph. These drawings, I often use for educational purposes or for scientific papers. However, in black and white these graphs are not very clear. I would like to change the form of the nodes and the color of the edges and nodes. Is this possible?

Hello, just a couple plotting related questions.

1.  I have a plot with 3 curves on it and the legend appears with curve 1,2, and 3 vertically stacked instead of horizontally side by side.  This shrinks my image incredibly.   How can I change this? 

im having a problem to do a PWM(pulse width modulation) using maple..please anybody know to do it..

HI all,

Here is an excerpt of a procedure I am working on:

>for i from 0 to N while T[i] <= rb do

>......

>Calculations

>.....

>X[1+i] := evalf(F(T[i],X[i]),15);
>T[1+i] := evalf(T[i]+h, 15);
>end do:

where rb is the rignt boundery

For example, if N equal 1000, knowing that X(T[0])=X[0] and F is an arrow procedure that depends on T[i] and X[i],  I will have 1001 elements that I could put in a list like:

[  [t[0],X[0]], [t[1],X[1]], ....]

I have Maple 11.01 and Im doing simple taylor and series commands. Perhaps I'm doing something wrong but I cant figure out what it is. This is my problem:

f := arctan(3*x);
taylor(f,x=0,3);


and the output from the function is: 3*x+O(x^3) but my "Texas Instruments TI-89 Titanium" and the "Maple TA" website say that the correct answer is 3*x-9*x^3

Good Day!

I numerically solved a system of ODEs with dsolve for the functions p(x) and q(x) over the domain x=[-1,+1].  Boundary conditions are specified at x=-1 and x=+1.  The output is a listprocedure.  

I want to determine the n-th derivatives of p(x) and q(x) at x=0.  Alternatively, I want the power series representation of p(x) and q(x) about x=0.

I would appreciate any advice on how to use Maple 10 to accomplish this.

Thanks.

Glenn

Hi I'm looking for a way to represent groups in Maple.  I have looked at the groups package, and still don't know how to deal with cyclic groups, or how to deal with elements of a group.  Note, I think I know how to do these things for permutation groups but what if I want to do it with a different group, like Z3. I really appreciate any help you can give me, thank you.

Hello,

I have a simple acceleration/position problem that I can't figure out how to use piecewise to put into Maple --- can anyone assist?

Can we define dependencies of a variable after using the variable? For example, let us take,

f:=2*T+x^2;

Here, T has no dependencies. What should we do to make it dependent of x and y without redefining the whole thing as f:=2*T(x,y)+x^2;

and, can we do this for a whole matrix or vector?

Let us say that we have a code shown below:

restart:
with(DifferentialGeometry):
DGsetup([x,y],M):
e[1]:=A*ExteriorDerivative(x);
e[2]:=A*ExteriorDerivative(y);
simplify(e[1] &wedge e[1]+e[1] &wedge e[2]);

the output of this code is