Hi *! has anyboddy successfully installed an older version of maple (eg Maple 6,7 or 8) installed on a recent linux system (kernel 2.6.18 and newer)? I would like to run such maples for reference porpose to check calculations against results of maple 9 and maple 10. [Maple 9 and maple 10 run not smoothly on recent linux systems and need patches, still many things seem to be broken, Maplesoft does not provide support for maple versions runing on an OS newer than the release date] Any hint welcome! BF.

According to the help page ?RandomTools,integer ,

• By default, the flavor integer describes a random integer in the range -499999999994 .. 499999999994, inclusive.

In reality, Maple produces only positive integers, in the range between 1 and 999999999989,

t:=RandomTools:-Generate(list(integer,20));

  t := [395718860534, 193139816415, 22424170465, 800187484459,

        427552056869, 842622684442, 412286285840, 996417214180,

        386408307450, 694607189265, 773012980023, 730616292946,

        106507053657, 396412723003, 944913350029, 210936428922,

f:=proc() args end proc:
convert(f,CompSeq);

Error, (in convert/CompSeq) invalid subscript selector

g:=proc(n) if n=3 then true else false fi end:
convert(g,CompSeq);

Error, (in convert/CompSeq) invalid procedure. Can't convert to CompSeq

maplemint(`convert/CompSeq`);

I like to copy math output to a Maple input line and frequently get something like this (∫)[0.1010108897]^0.0280000000011.71364529/(sqrt(1-137.2094860 ll^2 (1-2.828427124 ll))) ⅆll, instead of something like 1.158697057+Int(9.412159410/sqrt(1-88.58874480*ll^2*(1-2.828427124*ll)), ll = .1351916891 .. 0.2100000000e-1) Why is this happening?

Answering to Definite Integral post, I tried to do the first example in ?inttrans[fourier],

assume(a>0):
inttrans[fourier](3/(a^2 + t^2),t,w);

         Pi (exp(a~ w) Heaviside(-w) + exp(-a~ w) Heaviside(w))
       3 ------------------------------------------------------
                                   a~

using int,

int(3/(a^2+t^2)*exp(-I*w*t),t=-infinity..infinity);

                                  0

No comment. Well, I tried another example from the same help page,

inttrans[fourier](1/(4 - I*t)^(1/3),t,2+w);

Hi all, Can anybody tell me what algorithm has been used in the algorithm for gsolve command in the Groebner Basis? Any help/links/tips are highly appreciated. Thanks!

I had a kernel panic using Maple 10.06 on my MacBook and now Help can't find anything when I just open Help > Maple Help. Turns out this seems to be a 10.06 problem. I went back to a clone of my system that had 10.05 and ran the updater and the new 10.06 had no help. So not the kernel panic -- guess I hadn't run help since the update. Any ideas no how to fix this ? Thanks - Michael

Maple has a package for computing analytic laplace and inverse laplace transforms, has anybody on this forum written a Maple code that computes the inverse laplace numerically?

Hi, I've been trying to teach my students how to use units in Maple calculations, and have figured out how to get around certain things like integration, etc. I don't think, however that you can pass say a vector that has units attached through a plotting routine in Maple. For example if an array M = [[1[[atm]], 4[[L]]], [0.1[[atm]], 0.35[[L]]]] is plotted with something like display([pointplot(M, color = red)]) Error, (in pointplot) incorrect first argument If I define the array w/o the units (using this method), there isn't an issue. There is more than one way to skin a cat in Maple, so maybe there is a way to do this that I don't know?

the residue should be -1/Pi

> residue(1/(1-exp(Pi)^s),s=2*I);

> series(1/(1-exp(Pi)^s),s=2*I);

>

Well, I'm using Maple on a Mac with PowerPC. It's runing
wonderfully, but there is one problem. With Java 1.4.x it was running without problems, but after I upgraded my Java to version 5 there is a bug. Entering commands in a worksheet automatically inserts some whitespaces, but only in the view. That's looking really uggly, if the cursor is some whitespace further then the text I'm writing.
I hope it can be repaired in the future.

Matrix algebra over finite fields can be implemented using the following procedure,

Hi everyone! I posted the "multiple plot" question yesterday, unfortunately not worded all that clearly. But much thanks to the people who replied. Here is a better worded question, hopefully: Suppose I have created a series of plots {p[1], ..., p[n]}, how do I display them all on the same figure, EASILY! Suppose n = 100, it would be a chore to have to type out: with(plots): display(p[1],...,p[100]); Is there an easy way to display the n-plots? Perhaps something like display({p[i],i = 1..n}); ?? I did try this command, but it didn't work. I also tried p := array(1..n):

Hi everyone! I could display two plots named p[1], p[2] by with(plots): p[1] := ...: p[2] := ...: display(p[1],p[2]); How do I display n-plots name p[1], p[2], ..., p[n]? Thanks for your help! -Dan

Maple 10, when asked to evaluate int(sqrt(1/x^4+1), x = 1 .. 2) returns a complex value. (evalf gives 1.132 + (10^-9)I). Is there any way to get an accurate symbolic answer that is pure Real? Steven L Berntsen Montreal QC Canada