Got a Maple application that will knock our socks off? Something with cool images, elegant math, or just a great introduction to using Differential Equations? We want to see it! Maplesoft is running a contest to find the best new Maple applications out there. To enter, simply contribute your document on the Maple Application Center, including the line “The Maplesoft Great Application Contest” in the Comments box. (However, all submissions to the Maple Application Center will automatically be considered.) Submissions must be received by January 15, 2008. One grand prize will be awarded, consisting of one of:

Apple iPod Nano Canon Powershot digital camera A460 4.5” (114mm) reflector telescope Deluxe wooden chess set

Runner-up winners will receive their choice of:

Maplesoft laser pointer pen Maplesoft mug Maplesoft hat

Submission Guidelines: Award-winning applications will:

Be created in Maple 11 Make use of the new Maple “Document Interface” including 2-D math input Be well-formatted and laid out; for instance, you could use tables to format your document

They may additionally have some of the following characteristics:

Use Embedded Components Use the “Point-and-Click” paradigm

Make sure your application includes instructions. Some things to consider while writing the instructions are whether the document can be modified and re-executed, if a user will interact with the document using Embedded Components, and whether a user needs to follow instructions to use interactive tools. The following Maple documents are good examples of appropriate applications:

“Just Move it Over There, Dear!” Classroom Tips and Techniques: Eigenvalue Problems for ODEs - Part 3 Double Wishbone Suspension

Hi, is the JavaViewLib package 3.22 running with Maple 11? After: libname := "/home_zam/plch/maple/JavaViewLib", libname: with(JavaViewLib): (this works fine in Maple 10) I received: Warning, system/ssystem calls have been disabled in the options dialog. Any suggestions? With best regards. Roman

I am pleased (and terrified) to announce the first public release of a Maple library for high performance sparse polynomial arithmetic. This C library and Maple interface is under development at Simon Fraser University in Vancouver, Canada. We are releasing this interim version so that Maple enthusiasts and researchers can try it. Maple 11 is required.

I have twelve 4x4 matrices with specific complex-valued entries. I would like to know if they are linear independent over the reals. Is there some feature of Maple that enables me to do that easily? I've tried adding together all the matrices, each separately multiplied by an unspecified algebraic number, and then to use solve(). But I don't trust the result, partly because it becomes rather tedious, partly because the package RealDomain, with which I've no experience, has to be invoked in order to avoid producing a false solution of linear dependence over the complex numbers. I've also tried defining a 12x12 matrix consisting of bilinear traces of the matrices, analogous to the Cartan matrix in Lie algebra theory, and then taking the determinant to test for degeneracy.

Why is something like

V := Vector(2,(i) -> Matrix(3,3));

not equivalent to

V := Vector([Matrix(3,3),Matrix(3,3)]);

which raises the error "Error, (in Vector) initializer list contains elements of width > 1 and depth > 1", but instead equivalent to

V := Vector([[Matrix(3,3)],[Matrix(3,3)]]);

Why the need for extra pairs of [...]?

Hi everyone, I m a beginner with maple, so please, be patient with me! I m trying to use some complex algebra in maple. In particular, I want to define a function f(r,z) and I want to impose it to be REAL. So I thought, let's first impose the variables to be real(I'm using Maple 10, so I write everything as if I was in a document, ok?): assume(r,real) assume(z,real) after I have done this, I define the function, using the appropriate f(x,y) button in the toolbar: F:=f(r,z) and I impose it to be real: assume(F, real) but for some reason this does not work. Anyone knows why? The reason why I need to impose the function to be real is that F will be later multiplied by exp(Iz) to form a complex number.

Yesterday I was astonished to discover that the information in the fields "About Me" and "Contact and Profile Information" had vanished, or, more precisely, had been rolled back to some older version. Naturally, since then I've tried to remedy that by reentering the newest version (remembering, of course, to click the submit button), but to no avail, or, more precisely: it works fine as long as I do not log out; after logging in again the information have gone to the 'eternal cyberspace fields of lost bits and bytes'. Have anyone else experienced the same odd behaviour? I should say that I have also tried to hit the refresh button (F5) of my browser, and tried erasing all temporary- and offline files, but also to no avail.

In order to get better acquainted with the plotting facilities of Maple I thought I would try to plot the Möbius strip. In the proces I generalized the task so that I would be able to plot a ribbon twisted an arbitrary number of times. From these efforts the following code resulted:

with(plots):
radiusVector := (phi) -> Vector([cos(phi),sin(phi),0]):
ribbonVector := (phi) -> Vector([-sin(phi)*cos(phi),-sin(phi)*sin(phi),cos(phi)]):
p := (twist,theTitle,theOrientation) -> plot3d(
   radiusVector(phi) + t*ribbonVector(twist*phi),phi=0..2*Pi,t=-0.3..0.3,
   title=theTitle,orientation=theOrientation,grid=[100,10],scaling=constrained
):

Below follow two examples: 1. Ribbon with 1/2 twist: The Möbius strip:

display(p(1/2,"Ribbon with 1/2 twist: The Möbius strip",[200,70]));

 

2. Ribbon with 1/1 twist:

display(p(1/1,"Ribbon with 1/1 twist",[40,60]));

As a math phobic, I took a class this semester at UConn Math102Q. The instructor is pretty good but now at mid-semester there are a lot of "do more problems" answers. I hoped at the beginning this would help with my math phobia. The course is fairly new and uses the PSSSP model and the book is written by DeFranco and Vinsonhaler.

Hi guys, when browsing very long discussion threads, it would be nice to have a button or link that quickly moves to the top of the page. Currently I have to use the vertical scroll bar or mouse wheel. Sorry if this has been suggested before (I didn't follow this forum closely). Thank you!

SOME ONE PLEASE HELP ME WITH MY DAMM ALGERBRA I DONT GET IT WELL YEA SOME ONE THNKS .

The following returns 0, which seems less than ideal to me: assume(m::integer,n::integer); int( cos(m*x) * cos(n*x) , x = 0..2*Pi ); Is this intentional or unavoidable - or is it something that could usefully be improved? Toby

Why can't maple integrate exp(arcsin(x)), it is possible to do by hand without a lot of effort.

After successfully installing maple 11 on my computer running Ubuntu I start maple by executing the xmaple command. That will give the splash screen and later start a window which is just grey with no menu bars. In the end the startup tip dialog appears and when I select anything from there it disappears and nothing happens after that. The window stays gray. If I press the location of the window where the menu bar should be (also press F10) I get the menu items. Selecting any of them, like options, will invoke a dialog which is fine but there is nothing happening when opening a file or wanting to run an example or such.

I think that I will start moving to file all of my bug/error/oversight complaints in blog entries. This way (in theory), they are more easily indexed on this site. So, I was playing around with a procedure today: [>restart; testproc:= proc(Q::`=`) local a; ##IF STATEMENT## return a; end proc: [> The if statement noted in the procedure always took on the following appearance: if #Check if lhs(Q)=a# then #assign rhs(Q) to a#;fi; Writing my procedure as above ensured that the restart would be executed every time I changed my if statement. My first if statement went like this: