I've been laying low for a while now, finding new ways to break and repair Maple. With Maple11, I've found at least two disturbing bugs. The first is in implicitplot(): Maple no longer allows for variable ranges that evaluate to numbers. In Maple10, the command plots[implicitplot](x^3=y-x, x=-5..5, y=0..x); plots correctly, whereas the same command in Maple11 results in the error message: "Error, (in plots/implicitplot) invalid input: invalid range for second variable" The second bug is yet another bug in Maple's eternally bug-ridden Worksheet package. I do not know if this bug exists in previous versions of Maple, but there is a problem reading in nested quotes. To see this bug, do the following:

Hello. I have the MacIntel version of Maple 11 installed on a Macintosh Intel. When I start Maple and enter > 12345678901234567890; then Maple indicates "Evaluating" and the Memory and Time counters do not move. This goes on forever. When clicking the Stop icon, it becomes gray, but nothing else happens: "Evaluating" goes on and on. This only seems to happen when "Enable SMP support" is selected, and then happens every time. I have a MacBook Pro with an Intel Core Duo processor, so enabling SMP support seems sensible and should divide times by almost 2.

Is there a feature that lets you know if and how many times an uploaded file was viewed, and downloaded by mapleprimes members ? I just personally would like to know how useful my blogs and postings are. (Vanity, I guess. :->). Also, on my last blog dealing with algebraic cryptography, after posting the maple worksheet I did not get the option of having being viewable on maplenet. The only option that was given was to download the actual maple worksheet. Can someone please look into this ? v/r,

To check the correctness of the result given by maple it would be nice to integrate a theory prover capability in maple or give more support to work them together.

The motivation for this worksheet comes through a discussion about coding a complex Gamma function for MPFR (which covers the real case) using a library for complex numbers. The suggestion was to use a general solution due to Spouge - it seems to be quite simple and it works in MPFR for the real case, some according code is given by Wilder. However I did not understand all the steps in Wilder's code (well, MPFR needs ugly looking code, not my personal taste) and more irritating I was not able to get reasonable results with Maple (no, I have not tried to use MPFR and am afraid of difficulties in doing that on Windows) in a systematic way.

This is a request for the moderators/administrators. Is it possible for the administrators, or some responsible member of mapleprimes to issue periodic mathematical competitions ? Their relevance, and or dependence on Maple use is of no issue to me, and likewise for any rewards for the winners. My reason for asking is because I think it would help not just the participants, but everyone on mapleprimes to learn more about Maple. If I'm not mistaken, I think the makers of Matlab do something similar to this. v/r,

I'm checking to see if this problem is still being worked on. At times I find that the reply box is shifted to the far right of the screen, sometimes cutting off any text that is typed in that area. I also posted an earlier complaint about this same problem. v/r,

I would like to extract function with respect to the variables wich they are functions of in expressions of the form of e: e:= f(x)*g(y)*h(z); Thanks in advance

Hello! I am very curious as to what algorithm Maple uses in Linear Solve. I have heard recently that some people do gaussian elimination (or maybe LU factorization) modulo some prime for exact arithmetic solvers and then reassmble the solution via Chinese Reminder theorem? I wonder if anyone has heard to this, or recommends this as a method for solving a system exactly? I have a very special, very large and sparse matrix with only -1,0, and +1. I would love to solve this matrix exactly, but regretfully is too large for Maple (up in the millions by millions). Would anyone have any references in literature for me in this area? Or perhaps maples LinearSolve uses a different exact-arithmetic algorithm?

This thread is for people who have comments on Maple's documentation, e.g. the Help system, the dictionary, etc.

In the TTY version, there are all sorts of fascinating ways to have Maple stop/quit (on purpose). For example proc() quit end(); is one such way. Much more amusing is parse(qu||it,'statement'); which has interesting variations where one can really make it obscure what is going on. This does not work in the GUIs. But variations do produce rather entertaining results. For example, try FromInert(_Inert_STOP()); and note how the result is subtly different from qu||it; Now, try to do any GUI things on that first 'quit' (context-menus, drag&drop, etc, etc), and much fun ensues.

Is it possible to make Maple give coefficient directly and without using subs of a functio when partial derivatives appears in the expression? I:= s^2*a(s,y,z)+s*U(s)*diff(a(s,y,z),s)+s^2*g(s)*diff(a(s,y,z),y); I want to exract coeff of a(s,y,z)!!! I know that I can use subs to cancel terms with partial derivatives and then use coeff, but you can imagine how much painful it could be when you have about twenty expression from wich you have to exract other coeff Thanks in advance.

I'm working with Maple v10.03 I have a problem with the 'indices' function when I define a table and ask maple to give indices tab:=table([1,2,3,4,5,6,7,8,9,10]); indices(test); I get in output non-arranged indices [1],[2],[3],[5],[4],[7],[6],[10],[8],[9] it's confusing, is there a way to make maple give them arranged automaticly?

I just went through another chapter of Klima's title, "Applications of Abstract Algebra with MAPLE". Specifically the section on algebraic cryptography, if anyone is familiar with this title. I went through the example of the Hill Cryptosystem, and used again with another plaintext example of my own, and thought I'd also share this. I was wondering if anyone would know how to automate the code in this worksheet with or without maplets ? respectfully, Download 285_Maple 10 Classic Klima Algebraic Cryptography.mws
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The default dot density for exported GIF files is 96 dpi - necessary for screen display but not optimal for printing. Is there anywhere, internal or external to Maple 11, to monkey with the resolution to suit me? (Obviously, I can export GIF and then "alter" resolution in a third party package, but, hopefully obviously as well, this doesn't help as it is very lossy. I need to save the vector content directly to, say, a 200 dpi GIF image). Also, wmf and eps format exportations are not good options for me either, as these two file export formats fail to reproduce the graph I see on my Maple document: layering gets scrambled, transparency settings are ignored or altered, etc.