December 31 2005
Jordi 84
The exponential function behaves a little strange sometimes. This happens in Maple 9.
It thinks that 0^0 is 1. I'm actually in agreement with that, although I've seen many a mathemtician argue that it should really be undefined. De gustibus non est disputandum.
But it's strange that it think that 0^(1+I) is 0 but 0^I gives a divide-by-zero error, without mentioning that the division by zero occurs somewhere in a call to ln(x).
It's something stupid, but a potential source of mystifying bugs in user code. Some CASes, such as Maxima, are smart enough to have a specific error for 0^z for complex z. Still others return NaN.

Hello, I have a question regarding the floating-point evaluation of certain expressions. In the helppage for float we read the following: "The presence of a floating-point number in an expression generally implies that the computation will use floating-point evaluation. The floating-point evaluator, evalf, can be used to force computation to take place in the floating-point domain." So, this explains the following behavior: > 0.1+1/3; 0.4333333333 But what is the difference with the following expression: > 0.1 + Pi; 0.1 + Pi This contradicts what is in the float helppage; both Pi and 1/3 are exact mathematical quantities, yet 0.1 is a float, so one would expect a floating-point behavior to be happening. Maybe this behavior is explained somewhere else?

When I create a maple10 document and then output to latex, I've noticed not everything is there. For example I write a paragraph and then in math mode type the simple expression that is equivalent to: i^2-3j+4. The expression is followed by a new line. The resulting latex output only generates from this expression: -+ Has anyone else had any similar experience with latex output from maple10 and any idea of what I could be doing wrong or a work around. Thanks in advance for your ideas and best regards, James Cunningham

December 15 2005
cjdil1 8
I am wanting to convert a whole program in maple code to fortran code, (1) How do you suggest I can do this? I have in the code: Sub routines Individual lines of code, such as plots, for loops, if statements, import/export code etc. Whole code written in 2D input math (2) The code posted before using {anames()} etc I could not get to work, though I did manage to "merge" into one huge function. But when applying fortran(functionname), Maple does not do anything.

Dr. Sarah J. Greenwald, Appalachian State University, and Dr. Andrew Nestler, Santa Monica College have put together a site about mathematics and The Simpsons,including an exhaustive list of all math references on the show, relevant images, and the math background of the writers.
They use this material to introduce concepts, motivate students and reduce math anxiety, apparently. Aside from its potential educational value, it's fun.
See

Simpson's Math.
eithne

Professor Mark Bridges of Northeastern University has been compling a blog of commentary on various mathematical references that one encounters on the TV show Numb3rs. See

his BLOG site and a recent

news article.

I'd like to gauge interest in an online session on authoring Maple documents using new features in Maple 10: document blocks, embedded components, tables, autoexec code, task templates, embedded assessment, 2d math, etc.
Would you participate in such a (free) session?
-Laurent

November 28 2005
magi 4
Hi.
There is a command called genvecs in mathcad and i wonder if there is something similar in maple.
Or can somebody tell me how to make the same in maple.
Regards M

It is hard to follow up the

Math Rap, but the

Pi Song is pretty geeky too. And it is kind of catchy. I wish it went on longer.

Link (Via

Trixie)

I ran across this

amusing article on a recent poll of British scientists on who's greater, Einstein or Newton? Of course you'll have to take the results with a "grain of salt" as it was not nearly as scientific as

our own poll... :-)

November 23 2005
Nina 72
The Maple V Share Library was a wonderful facility for mathematicians comprising some 140 Maple routines, packages and worksheets written by Maple users and contributed freely to the Maple community.
John Maplenut has written a short program which allows the Maple V Share Library for Windows to be accessed directly from all versions of Maple up to and including version 10. You can access the Package from the

Maple Application Center or from

John Maplenut - Updated Maple V Share Library.

Let's all congratulate Carl Friedrich Gauss for winning our prestigious

Greatest Mathematician contest. Our next poll brings us back down to earth and requests your input and comments on what facilities you work with most in Maple. T4.

Hi! I am trying to convert an entire Maple worksheet into Fortran code. At the moment, I have managed to convert a specific program using with(codegen): f:=proc(x) function end proc fortran(f) But this method can only convert one function at a time. Can someone please help me to convert an entire worksheet into Fortran or other languages? I have text and math in my worksheet, and I'm using 2D math in Maple 10. Thanks :)

November 09 2005
AndyU 28
Additionally to my previous post:
First example returns (mathematically) wrong result,

eval(diff(v(z), z), [v = (x->x*H), z = H])
2H

Equivalent works fine (just because multiplier "a" leads to implicit conversion of diff to D).

eval(diff(v(a*z), z), [v = (x->x*H), z = H, a = 1])
H

And the most exiting example (I think, that result can't be predicted by Maple developers also ):)))

eval(diff(v(x, y), x, y), {x = H, y = H})
(D[1,1](v))(H,H)+2 (D[1,2](v))(H,H)+(D[2,2](v))(H,H)

Functional analog works, of course, without any errors.