When I saw a statement on a post I thought "I didn't know you could do that". I downloaded it and it wouldn't compile. Here is the statement. G := (i,j) -> if is(i,even) and is(j,even) then 1; else 0; end if; When I tried to compile this in MAPLE 10 I got an "invalid arrow proceedure" error. Should this compile? Thanks

In a number of posts containing code I have seen the expression fi. When I type ?fi I get the help file on if. I read through this file and find no reference to fi. Could someone explain what fi is and/or where I might find it discussed in the help file? Thanks

Hello everybody! Could anybody help me How can I obtain a numerical solution for an ordinary differential eigenvalue problem? I suppose that it can be something with "dsolve,numeric". Thank a lot

Dear all: Anybody could tell me how can I obtain this integral with maple? Int(u^(d)*coth(u/2), u=0..infinity); where "d" is positive thank a lot D. Reyes CBPF

As a project I have found need to create a new type through the external calling interface of maple. To allow for easy use of this type I have been overloading the operators to handle this new type. Most of them seem to work quite well but I am having a problem that by overloading these operators some totally unrelated functions seem to break (even when not dealing with my new type).

Hello everybody! I again have a problem with "Dsolve numeric". I solve a system of linear ODEs with boundary and continuity conditions.I got an error, which is associated with any internal procedure of Maple. For the sake of simplification, I reduced the order of equation from two fourth-order ODEs to the eight equations of the first order, but the same error is outputed. Download 2847_problem-1-1.mws
View file details Please help me clarify it. Thank you

Hello, my question is very simple but I can't find the way to do it. I have to plot several 3D-dots(x, y, z) over a 3D-sphere. Please, can anyone help me? Thanks!

Is there a way to take data from an Excel Spreadsheet and easily put it into a matrix in Maple 10?

This is my worksheet: > a:=10: > f:=6: > for i from 1 to 12 do b[i]:=arrow(r[i],F[i])od: F[i] are predefined vectors and r[i] are the points form which they start. > with(plots): > with(plottools): > A:=seq(b[i],i=1..12): > > > B:=plottools[line]([0,0,0],[a,0,0],thickness=3,color=black): > C:=plottools[line]([0,0,0],[0,a,0],thickness=3,color=black): > unprotect(D): > D:=plottools[line]([a,0,0],[a,a,0],thickness=3,color=black): > E:=plottools[line]([a,a,0],[0,a,0],thickness=3,color=black): > > F:=plottools[line]([0,0,0],[0,0,a],thickness=3,color=black): > G:=plottools[line]([a,0,0],[a,0,a],thickness=3,color=black):

How do I get the solutions from the results of fsolve to a cell on the spreadsheet? For example, fsolve gave me {t3=4.6976,t2=4.42238} and I want to put them in cell A1 and B2 respectively. Thanks.

Can anyone tell me why I am getting the error I am getting in this file. View 2292_Binomial.mw on MapleNet or Download 2292_Binomial.mw
View file details

Hi everyone, I'm trying to make a maplet application, but am encountering some problems.... I'd like to have a maplet asking for an integer input, and after clicking ok, it would open a new maplet with as many TextFields as the given integer. Is there a way to do this? In normal Maple code, I would use a for...do loop of course, but these loops seem not allowed in maplets... Suggestions are more than welcome. Thanks a lot in advance! Frederik.

I am using Maple 10 to generate via codegen and CodeGeneration systems of ODEs to be externally solved by CVODE (a solver written in C). It happens that the lines so generated are so huge that the C compiler chokes. Searching this forum for previous posts I found the recommendation to use the optimize option in order to break long lines. However this seems to be insufficient and I wonder if there is a simpler solution like specifying the maximum line length and have Maple handle the breaking.

TIA,
Heitor Pina

Hi again, I am having trouble resolving the issue of which eigenvector is 1st, 2nd 3rd etc. The need is for diagonalization because the eigenvectors are the columns and the eigenvalues as you know are the diagonal entries in the A matrix. Does it make any difference in what order the vectors are placed in the columns? TIA Larry Ciak aka malt_master

Greetings: How can one put arrowheads on plot axes to show that they keep going? Can it be done using plot/axis or plot/options or do I have to actually draw and overlay an arrow on each axis? Any ideas? Thanks, Phil