Yet another question (after scouring the Maple documentation and coming up empty-handed): The following commands: with(student) intercept(y=sin(x), y=0) Result in this output: {y=0, x=0} How can I return the other intercepts with the x-axis? For instance, the first positive and first negative non-zero intercepts? (i.e. the "first" x-intercepts traveling left and right away from the y-axis?) Thanks as always, Bryan

Quick question: in maple , sqrt(4) returns 2. Why not plus/minus 2, since -2 is also a valid square root of 4? Thanks! Bryan

Most experienced Maple users have encountered situations where the "do" and "end" statements are not in the same execution group. For example:

> for n from 1 to 10 do
>   n, n^2, 1/n;
>
Warning, premature end of input, use <Shift> + <Enter> to avoid this message.

> end do;       # in a separate execution group
Error, reserved word `end` unexpected

I have no objection to the issuing of a warning message when the "do" is executed without a matching "end". My request is that the unmatched "end" (particularly when it appears as the initial (non-empty) string in an execution group) should receive a warning instead of an error.

anyone has done significant development with these two?

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.

Create new document (or worksheet) with content below and execute it step by step: > restart; > Eval(diff(v(z),z),z=H)==eval(diff(v(z),z),z=H); Eval(diff(v(z),z),z=H)=diff(v(H),H) > v:=z->z*H; v:=z->z*H > value((1)); H=2H As you can see, result of eval, which in this case is equivalent to subs(z=H,diff(v(z),z)), at the right side of first equation leads to wrong final result :( This...

Where can I find Maple worksheets for viewing/download with regards to the following fields of application?:- 1) soft independent modelling of class analogy (SIMCA), regularized discriminant analysis (RDA) and discriminant analysis with shrunken covariances (DASCO) for multivariate classification, 2) principal component scores-based multivariate statistical process control (MSPC), 3) modelling of multiplicative terms in analysis of variance (ANOVA), 4) generalized rank annihilation method (GRAM) and iterative target transformation factor analysis (ITTFA) for curve resolution and optional second-order bilinear calibration, and

ORRCA (Ontario Research Centre for Computer Algebra) is a research group drawing from key members of the University of Waterloo and the University of Western Ontario (London) as well as several other prominent universities. This group includes many of the original pioneers of the Maple technology. They are currently one of the most active and largest research groups in Computer Algebra in the world. This Web site give a good overview of the current directions in Computer Algebra.

This is regarding an earlier thread about Maple's misleading output of exponentials. Here is a link with a screenshot of what I am talking about: Maple output It seems like no one else is experiencing this problem. Maybe it has something to do with the version of java or OS X I am running, which is OS 10.4.3, Java 1.5, and Maple 10.01.

Matthias Kawski's site contains a rich collection of Maple worksheets and applications. In addition, there is an extensive collection of info and tools for math and other software.

Edwin Clark of the University of South Florida compiled this nice list of links to the home pages of key people within the Maple communities. Some of these folks are part of the current research network that feeds Maple development. Others are some of the stars of the user community.

The Maple Application Center is an online archive of Maple application code, worksheet collections, and compilations. It's managed by Maplesoft and over the years, the content has accummulated to thousands of worksheets and tools. Topics range from secondary education to wide range of advanced math topics.

The Math Forum from Drexel University is a very large, well-organized, collection of links and information on various topics in math research and education. It's collaborative in nature and you can add your suggested links.

To add an item, click "Add Child Page"

The Maple User Group mailing list was once the main forum for asking questions and discussing Maple. Eventually the comp.soft-sys.math.maple newsgroup was proposed and the MUG list faded away. Some answers to specific questions are archived here, and all messages from 1998-2003 are available as digests.