I came across this issue on my course today, and found it somewhat surprising: restart:Digits:=7: foo:=1/2*sqrt(3): evalf(foo); 0.8660255 evalf[5](%); 0.86603 evalf[5](foo); 0.86605 I suppose this means that whatever algorithm Maple uses to compute the square root also works to the specified level of accuracy and the above is a result of accumulated rounding errors.

Maybe this should go under the Maple15 wish list?

A menu box that displays a list of currently defined values made by the user and any attributes the user may have assigned to them. 

Just a minor opinion. 

The tip of the day flyout box for Maple 9.5 was the most pleasing to the eye.  Large bold font on a simple splash background.  It's format was more aesthetically pleasing than the current one. 

I read them every now and then, but I don't turn the option off, I've learned some interesting things I would not have known otherwise. 

Just off the top of my head, what about animation tip of the days too?

I came across the tutorial/manual here, which I found to be most excellent for a beginner in Maple, such as myself:

http://www.maths.ox.ac.uk/courses/2009/moderations/mathematics-maple/exploring-mathematics-maple/material

The page will also be updated with lecture notes and sample code

Around the time that Windows 98 was at its most popular, I used to dabble in programming Windows user interfaces with Visual C++ and the help of several thick MFC (Microsoft Foundation Class) manuals.  I wanted to create packaged (and admittedly simple) engineering applications. But for a chemical engineer with little background in Windows programming, combining math functionality with a user interface was time-consuming and cumbersome. (MFC can be arcane unless you’ve invested considerable time in learning the API.)

Later, I migrated to VB6.  Designing an interface was an order of magnitude easier, but I still had to roll many of my own math routines, or link to external libraries. While I may be interested in the mathematical mechanics of adaptive step sizing in Runge-Kutta algorithms at the intellectual level, it was secondary to my then goal.

Does anybody knows of a method using ImageTools to correct an image for lens distortion?

The ability to edit or change the splash screen for Maple would be a cool feature. 

If not, how about a contest for new maple releases, people could submit their own splash screen design and maybe win a maplesoft T-shirt or ultimately Maple itself? 

with (ImageTools):
img:=Create(480,640);

img[1,7]=.97;

                                             img[1,7] := 0.97

img[1,7];

Simon Plouffe has started an interesting thread on the usenet newsgroup comp.soft-sys.math.maple (viewable here, for those without good nntp server access).

They are discussing the speed of computation of exp(1.0...

How is it possible to get the following error message

Error, invalid input: DMat:-DSolveSys expects default value for keyword parameter begynd to be of type Vector, but received {}

?

I thought that the default value of a keyword parameter need not match any particular type, in fact so it says in the help page for 'Procedure Parameter Declarations' :

I had some problems using CodeGeneration and Compiler on a particular code.

Partially there are some bugs - and things, which need proper handling (not so obvious in advance, at least for me).
Details with comments are in the attached worksheet (or its pdf version)

Download 102_Some problems using CodeGeneration and Compiler.mws

I came across this poll,

and thought it would be nice to see what software people use here (some people have already said that the don't actually use maple, they only post here to help people).

So far it looks like not many people use Maple, hopefully once more people vote this poll will become more accurate:

http://users.ox.ac.uk/~hert3229/

 

 

Why are lists limited to 100 elements?  Will it be expanded?

To judge results of functions coded in double precision against precise results (as they may be given by Maple) one has to respect decimal presentations on one side and IEEE on the other side.

For that one can use routines developed by Florent de Dinechin, which are worth to be better known.

Here is a Maple sheet showing how one can do it (looking at the complex valued power function using evalhf versus using MS VC2005 as an example).

After reading the interview with Gaston Gonnet who was one of the original founders of Maple I became  interested when he started to talk about their thoughts of moving to open source.  Don't get me wrong his whole interview was quite interesting.  Then I just happened to stumble across this article http://www.c4ontario.ca/news-room/press-releases/software-wrap-up/view from April 2009, where Tom Lee from maplesoft is on a panel discussing open source software.