Bonjour,

Comment expand l'expréssion ci-dessous comme un polynome en les variables x,y :

R:=((-lambda*alpha*beta*eta-mu*alpha*beta*eta-nu*alpha*beta*eta-alpha*beta*eta-xi*alpha*beta*eta-tau*alpha*beta*eta)*x+(xi+xi*beta+tau+lambda+lambda*eta+lambda*beta+xi*eta+tau*beta+mu*beta+mu*eta+mu*alpha+xi*alpha+tau*eta+beta+lambda*alpha+mu+eta+nu*beta+tau*alpha+nu*eta+nu*alpha+alpha+1+nu)*x^4+(tau*beta*eta+lambda*alpha*beta*eta+beta*eta+nu*alpha*eta+lambda*beta*eta+nu*alpha*beta+...

I have the following problem in normal 2-D output: Greek letters appear not to show up.
Here is an example of the issue (screen shot):

Hey guys,

I do have a problem with Excel Import.

What I wanna do is import 2 collumns from a Excel-File.

The first Column are the X-coordinates and in the second column are the y-coordinates.

After the import of the two columns (each with around 1000 rows) I would like to run a formula for each of this x/y pairs. Means for example a formula i1:=2*x+y or something like this.

And I would like to get the results also in a...

hey i´m back again and need help to solve this situation Please:                                          restart;with(ArrayTools):                      ...

Like to use a few brief Maple commands in a presentation, but don't want to have the output shown in advance. Is there a way of saving a worksheet without the output or load it with just the commands?

Dear friends

I solve a rectangular system of equations AX=B   where A from order 3m+1x2m      X from order 2mx1       B from order (3m+1)x1   where  m=400, by LeastSquare or by multiply by A^T  

A^T*A*X=A^T*X

let M=A^T*A

then     M*X=A^T*X                 finally               X=M^-1 * A^T*X

Dear friends.

How can i increasing or removing the software limits for maple 16.

I'm having problems using the complexplot command in Maple 16 with over 1 million points. I really want to plot the points - I don't want an approximation. I noticed some strange things with the list/table carrying my complex points. If I ask for individual values, like T[20], it won't give the correct value, but if I ask for a range, like T[1..20], it will display the correct values.

I get an error when trying to use complexplot saying either invalid range, if I don't...

Hi everyone,

I am trying to understand how can I create a function based on the differentiate of a matrix.

For instance:
 

And I would like to create the matrix FF based on the derivative of F with respect to x and then be able to use FF and a function.

I tried to combine, unapply, map and diff but I can't reach what I'm looking for.

Hi,

I want to create a tangent function.

I know that you can create tan(x) but how can you create the tangent function when the solutions are only:

x in [0.19740;0.91510[ union [3.3390;4.0567 ?

Another explanation:

How you can graphically show the valid values of x in this inequality?

                  0.2 ≤ tan x < 1.3
Best regards

fattali

Dear Users,

I would like to know how to convert the following bessel product into a polynomial form.

I have an experession as follows:

BesselI(1,p*x)*BesselK(0,p*x)+BesselI(0,p*x)*BesselK(1,p*x)    #where p is arbitrary real positive constant and x is a variable

How to get the result in maple by simplify, convert or any other functoins.

Thanks for your attention.

i'am using maplet shortcut in maple 

but it did not show in table form, it only gives final answer.

use DocumentTools in 
with(LinearAlgebra):with(VectorCalculus):with(linalg):

# F1,F2,F3 are my equations 
F1:=Do(%f1); 
F2:=Do(%f2);
F3:=Do(%f3);

# these is my initial point
X1:=Do(%x1);
X2:=Do(%x2);
X3:=Do(%x3);

# the whole operation
F := Matrix(1 .. 3, 1 .. 1, [[F1], [F2], [F3]]);
J := Jacobian([F1, F2, F3], [x1, x2, x3]);

I have the following expression 

lambda1-2.9881355172134833*lambda2+16.044692204509636*lambda1^2-114.31727386075951*lambda1*lambda2+202.36051939112247*lambda2^2

I want to get the expression in a form in which all the coeffs are fixed to 7 decimal places. 

I have tried with 

evalf[7](lambda1-2.9881355172134833*lambda2+16.044692204509636*lambda1^2-114.31727386075951*lambda1*lambda2+202.36051939112247*lambda2^2)

Hi guys. I need to do a Runge-Kutta method to solve two equations and I'm having trouble at using functions. My program is as shown below:

restart; A := Matrix();

dt := 0.1e-2;

diff(x(t), t) := v;

diff(v, t) := a(x(t), v);

xo := 0; vo := 0;

for i to 1000 do

xn := xo+v.dt;

vn := vo+a.dt;

dx1 := vn.dt; dv1 := a.dt;

dx2 := (vn+(1/2)*dv1)*dt; dv2 := a(x(t)+(1/2)*dx1, (1/2)*dv1)*dt;

dx3 := (vn+(1/2...

of the integral int(cos(t^3)/(t+2), t = -infinity .. x) as x tends to -infinity with Maple? I have in mind a better asymptotics than 0.