Hi, I would like to numerically work out the profile of one expression (integral and BesselK function involved). But the computer was just jammed and came out nothing after long time waiting. I attach the worksheet below and maybe you could have a look at it or directly run it in your machine to check what is wrong, either my computer or the code itself. Thank you very much.

> restart;
> with(PDEtools); with(Units[Standard]); with(ScientificConstants);

bir değişkene textfield değeini nasıl atayabirim

I am trying to plot a vector field with fieldplot, but the vector field components contain a numerical integration (i.e. evalf(Int(...,...)). However, maple refuses to plot it, and gives me this error mesasge

"Error, (in plots/fieldplot) no non-zero vectors found"

maple has no problem evaluation the vector field at any value of x, and y, and takes only a fraction of a second for each point. However, if i change the integral inside the vector field components to int(...

I am new to maple, and looking for som tourturial to get me started. My school dont offer any education in the program.

Can maple do the same things as matlab? i have a little program i wrote i matlab. Is it possible for me to write that i maple?

% Afkøling af 1L mælk
% 08.02.2011/RBE

clc                   % sletter skærmen

Since coming to Maplesoft in 2003, I've kept a notebook of "gems" I've gleaned from consulting with the programmers in the building. I call it my "Little Red Book of Maple Magic." It really is red. The first spiral-bound notebook was little, and it was red. When it overflowed, I moved the notes to a red ring-binder. But it's not so little any more.

The equations are x+2y+3z=4, x +ky+4z=6, x+2y+ (k+2)z=6. I entered the eqautions and got up to this point. > eqlist := [eqn1, eqn2, eqn3]; and got the equations repeated back to be
> varlist := [x, y, z]; and got the 3 variables repeated back to me. When I tried to genrate the matrix, I put in. A := genmatrix(eqlist, varlist, flag), and got genmatrix([x+2*y+3*z = 4, x+ky+4*z = 6, x+2*y+z(k+2) = 6], [x, y, z], flag). What did I enter wrong? did I have to incorporate...

I am trying to go from body-referenced aircraft velocities u, v, w, to angle of attack a, sideslip b, and total speed V. This is a standard problem for beginning aeronautics, I'm just wondering the best was to solve it with maple. Spefically, I would like to use the following relations to get short expressions for the derivatives of u, v, and w.

Given that

u = V * cos(a) * cos(b)

v = V*sin(b)

w = V*sin(a)*cos(b)

and all variables above...

Hi there,

I need to create permutations of this given set Z:=[2,5,7,8,10] with Maple and substitute these numbers in a given polynomial. 

To create the permutations i did this on maple:

> Z:=[2,5,7,8,10];

> C := combinat[permute](Z, 3):

how do I labelled the outcome of the permutations "C" as [a,b,c] so that I can then subtitute each permutation into the polynomial f:=4a+2b+c?

Thankyou for any help!

:)

Can anyone help me understand why the following happens?

N := GraphTheory[Digraph]({[1,3],[3,9],[9,27]});

GraphTheory[IsNetwork](N);

and

M := GraphTheory[Digraph]({[1,2],[2,4],[4,8]}); 

GraphTheory[IsNetwork](M);

both indicate that the graph is not a network.  On the other hand, for numbers n other than 2 and 3, Maple does recognize the graph {[1,n],[n,n^2],[n^2,n^3]} as a network.

This procedure that I wrote:

For the function

F(u)= u(x)u(y)                    

the first Frechet derivative is given as

F'(u)v = v(x)u(y) + u(x)v(y)

that is the Frechet derivative of F(u) acting on v.

So how do I get maple to give me the Frechet derivative of  F(u)= u(x)u(y)  ?

F(u...

I have an equation which has no explicit solutions, but I would like to plot the solutions. I have construction a function which, for every argument, produces a numerical answer to the equation, but this function can't be plotted. Below is a simplified (equation has trivial explicit solution) function which shows the difficulty.

> Fe := p->fsolve(eval(1-x+p = x), x)
p -> fsolve(eval(1 - x + p = x), x)

Here we exercise the function to produce floating results.

Hello.

My question is quite simple : how can we define the size in pixels of a plot ?

After plotting we can change the size of the image with the mouse but it is quite approximative.

For example is it possible to display (by default) all the plots of a worksheet in 800x800 pixels ?

Thank you very much.

Hello everybody !

I am trying to display some solutions for the differential equation :

eqdiffyx75:=

When I make a DEplot, with the command : DEplot(

Help!!   How can I get maple 14's fonts to be smoothed?  In Windows it seems to pick up the OS setting on smoothing fonts, but not under K/ubuntu 10.10

HELP!!!!!!!!!!!!!

Hi I have just begun to use Maple and there are some function I am not able to use.I have 3 questions

1. I would like to plot the normal function (given a specific expected value and variance): is there a simple function to do it or I just have to re-write the function inside Maple?
2. is it possible to draw a line for a specific value of the graph, let's say x=1 without drawing an entire line for the graph (just to highlight the point)
3. is it possible...