I have been having trouble with the riemanntheta function included ith the algcurves package. I am running Maple 10 on a MacPro under Mac OS X. There are two sorts of trouble: 1. Memory leaks: repeatedly calling the function eventually uses up all of my memory 2. Incorrect results: Maple's values are _sometimes_ incorrect; for example, a large value at a known zero of the function. Anyone else run into this? TIA.

When execute the following worksheet to "Export" command, Maple lose connection to kernell.

Hello, i'm newbie here and spanish... Someone can help my, i want an procedure/function that you put an matrix and it will give you the rang/rank but not using the function implemented un maple... I'm using MAPLE 10 THX

The following seems like a bug. Now, it could be that Logic is not built to handle such requests, in which case it should die gracefully, instead of giving funny answers.

> Logic[BooleanSimplify]((x > 3) &and ¬ (y > 5) &or (y > 5));

                (5 < y) &or ((3 < x) &and ¬(5 < y))

and yet

> Logic[BooleanSimplify](a &and ¬ b &or b);

                               a &or b

Maple 11 on linux so far has been fantastic, but there's a problem with printing. I use cups, and every other application brings up its printing information just fine. When I try to print in Maple, it gives me an error that says "No print service found". Does anyone know how to deal with this?

Does anybody know how to move the legend in the ploting area? By default, the legend sits at the bottom and outside the plotting area. Thanks.

I used Maple10 to solve an ODE from my research project and got a solution with HeunC function. I did derivative of the HeunC function and got HeunCPrime function. However I found HeunCPrime is just a sign. It cannot be valued or plotted with a selection of parameters. My questions are as follows: 1. Is there any special package I need to use to value or plot HeunCPrime function? 2. Is it possible to convert HeunC into other functions which I can manipulate for derivative and plotting?

Anyone having issues with the printing time in Maple 10 when there are graphs? I have to print 12 graphs for a class and it took over 20 minutes. I never had this problem in any other version of Maple. Any suggestions?

Not sure where to report this. I tried emailing tech support through the web form, but it rejected my valid product code (nice). Here's the text of my message: I've just started using Maple 11 (upgrade from Maple 10) and I'm getting a really bad crash. All I'm doing at this point is experimenting and learning (new user), so the types of input I'm dealing with are along the lines of: > restart; > plot(sin(x), x=-5..5); And the like. The problem is, in some circumstances, but not others, Maple 11 will just shut down. No messages, no warning, nothing. It's just gone, and whatever I was working

I have a simple expression of the type F:= -kT*ln(Q^N); that I am trying to manipulate, but after using "expand" the resulting expression is -kT.ln(Q^N) instead of -kT.N.ln(Q) Why "expand" does not work? Is there anything else I must do in order for expand to perform the expansion?

I have maple 9.5, on win xp professional. It worked well for a long time. Once I installed i.explorer7 and I had some problems. I resolved all of them except that now maple 9.5 does not work any more (while maple classic 9.5 is still working). I tried do uninstall maple and reinstall it, but it still does not work... When I run maple, I do not have any error message, simply maple do not start. Any suggestion? thanks giovanni

In MapleTA (2.51) we are using an algorithm to generate the components of a formula. The components are then combined and the MathML function called to render the formula. We have discovered a problem that occurs when a negative number follows an operator, i.e., 5a+4b+-7c. Here is a simplified example of the question code: mode=Multiple Choice@ editing=useHTML@ algorithm=$a=rand(-5,5); $b=rand(-7,7);@ question=a is $a
b is $b

sin(v^$a)+$b

${maple("MathML[ExportPresentation](sin(v^$a)+$b)")}@ answer=1@ choice.1=z@ If $a, $b, or both are negative, the following error is generated:

I am trying to discover what the error of the FFT implementation within Maple is. Here is the problem: f=some array of values f2=iFFT( FFT( f)) Error = Absolute value (f-f2) point by point. For example, within the IDL programming environment, Error tends to lie between 10^-14 and 10^-16 for double precision calculations, independent of array size. Normally I would just calculate the array, then plot the results. I am having trouble getting Maple to plot an array of values, since data analysis seems not to be one of the functions that this program was designed for. I have also been unable to find any sort of general discussion on the errors inherent with the standard algorithms, though it appears that these errors should be within factors of 10 of the minimum number on the machine.

Wonder is someone can help I need to Minimize the non-linear objective function: Obj:=(1/4*a[1]+3/4*a[2]+7/8*a[3]+15/8*a[5]+2*a[6]+19/8*a[7]+21/8*a[8]+1/4*b[1]+ 3/4*b[2]+7/8*b[3]+15/8*b[5]+2*b[6]+19/8*b[7]+21/8*b[8])^2 subject to the following constraints: CON1:=add(a[n],n=1..8)=4 CON2:=add(b[n],n=1..8)=4 CON3:=seq(a[n]+b[n]=1,n=1..8) CON4:=seq(or(a[n]=0,b[n]=1),n=1..8) With(Optimization): NLPSolve(Obj,{CON1,CON2,CON3,CON4},assume = nonnegative); produces this: Error, (in Optimization:-NLPSolve) constraints must be specified as a set or list of equalities and inequalities

Is there a Maple reader I could download free of charge? I want to open a Maple document on a different computer. Thanks in advance !!