Hello All;

After having access to maple since maple 7 and never realy learning it, I decided that I would give it a good stab.

So far it's been cooperative. but I started from basic things wand worked my way through. I am now at the point where I need thisgs done and can't figure how to do them... shrort of rewriting the equations in the form I want.

I am working on exact differential equations and I need to convert this form:

Hey!

I'm really new on using maple 14 and I need help please.

I want to either connect maple 14 software with an oscilloscope for data acquisition or import the data captured by the oscilloscope to maple 14 and manipulate this data with the software for dynamic system analysis so I was wondering if anyone knows a programming code or a command to do this please =( I'm stuck

Thanks for your attention...

Hi!

I i have a 2nd order ODE where i want to chance the derivatives of x(t) and y(t) exactly at sqrt(x(t)^2+y(t)^2)=1 ,or before, as close to 1 as possible.

I found "event=" in/dsolve/numeric/events, where i can define the trigger and the action.

What is the difference between: "event=[[sqrt(...)-1,diff(x(t),t)=...],[sqrt(...)-1,diff(y(t),t)=...]]" and "event=[[sqrt(...)-1,[diff(x(t),t)=...,diff(y(t),t)=...]]]", because i get different results, which one is the correct form?

We have a list of cartesian coordinates [[x1,y1], [x2,y2],..., [xn,yn]], which describes some curve (say the way of a walking dog). We don't know any analytic expression for that curve. How to estimate the radius of curvature of the curve from below and above with Maple?

Hi,

I would like to define the following exceptions:

0/0 should be equal with 0, but any other x/0 should be infinity, if x>0 or -infinity, if x<0.

In the following example, I show what I achieved, however, I also would like to have equation (8) to be infinity.

BR,

Zoltan Faigl

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...