MathWorld: the web's most extensive mathematics resource. Created, developed, & nurtured by Eric Weisstein with contributions from the world's mathematical community.

Lambda the Ultimate is a community site for programming languages. The name comes from The Original 'Lambda Papers' by Guy Steele and Gerald Sussman. Yep, that Guy Steele, co-creator of Scheme, then Java, now working on Fortress. Fortress is intended to be a disruptive technology (like Java was), and is squarely aiming at markets that are currently served by Fortran and Matlab.

My daily routine involves a look at what's new in academic Math via the ArXiv (through the convenient Front interface at UC-Davis), and in academic CS via the lesser-known Computing Research Repository. Actually, I use the nice feature both have to have an email (with links) sent to me every weekday with new posts in my areas of interest.

I have a question about this site. Does Mapleprimes keep your postings at the different forums indefinitely ? I would like to have all my collected postings, blogs, etc stored somewhere for possible future reference. Can I rely on mapleprimes to have all my postings collected as part of my records ? Should I start manually collecting all the information I want on my own ? thanks, Dan

And Google strikes again. They now have a Curriculum search that is just perfect for hunting down Maple-related resources. Looks like it needs a littel fine-tuning, but it definitely shows promise!

The server time seems to be (at least) 5 minutes off. Alec

Hi all, I am new with maple! I want know if maple has the some tools to create a GUI as matlab. Is there a function "patch" as matlab? Regards

Hello If we have an integral of say two functions f(x) & g(x) and we know one function and the solution for the integral. Can we find out the other function using Maple. Could anyone guide me on this. Regards S

p >Hello. I'm still kind of new to the practice of using a computer program to manipulate equations. I knew that one way to define an ellipse is as the locus of points P such that for 2 fixed points F1 and F2 the sum PF1 + PF2 is constant. I also know that in Cartesian coordinates, we get a formula of the form Ax2 + By2 = 1. If we set up our coordinate system such that F1 and F2 are on the x axis each a distance c from the origin and the maximum width of the ellipse is 2a, let's try to figure out A and B using MAPLE.

>

define(h,'orderless',h(1,2)=3); works as I would expect and h(1,2) and h(2,1) evaluate to 3. define(h,'orderless',h(2,1)=3); gives both h(1,2) and h(2,1) evaluating just to h(1,2). I suspect this is a bug since replacing 1,2 by a,b or by b,a it works as I would expect. Is this (another) fundamental bug or have I misunderstood something? I'd be interested in any comments.

I have to press 'login' twice to get the navigation bar on the LHS to show me as 'logged in'. This has been happening to me for about a month now, and it is irritating. I am using Firefox 1.5.0.8 on Windows XP.

I wish to know if there is way to plot the following functions: x1=X1+X2*gamma(t) x2=X2 and x1=alpha*cons(theta)*X1-beta*sin(theta)*X2+gamma x2=alpha*sin(theta)*X1-beta*cos(theta)*X2+gamma where in the second one alpha, beta. and gamma are constants. many thanks, A.

Maplesoft.com recently posted a new user story that describes how Maple was used by a German company that develops, produces, and distributes towing kite wind propulsion systems for modern means of sea travel and transportation.

Here is a quote from the company:

“SkySails is grateful to Maplesoft, because Maple saved us a lot of time. Using Maple was very easy and quick. The computations we used are probably very basic for Maple, but they were extremely effective for SkySails. When testing the simulator, the correctness of the mathematical model is crucial. With Maple, there was nothing to worry about!”

Click here to read the whole story.

The following equation cannot be plotted correctly in the usual 3 dimensional plot with Cartesian coordinates. eq := (x^2+y^2+z^2-1)^3 - x^2*z*3 - y^2*z^3 = 0; Either a 3 dimensional implicit plot, or a spherical coordinates plot is needed. What surprised me was how long Maple 10.06 took to produce the latter with very roughly the same amount of detail as the former: 454 s versus 0.7 s. It seems as though one should always prefer the implicit plot to the spherical plot if the 3 dimensional Cartesian plot fails. I would be grateful for any thoughts about this and any improvements to the code below. (Apologies for not posting the worksheet – I think that File Manager might object to its 10MB size!)

Hi, I am Sripad from INDIA. Here is a query on Maple. If I give Integration of log(cotx)+log(tanx), then Maple is giving me an answer in terms of dilog and I. But actually it should be a constant. Could someone help me, how it can be done in Maple. Regards Sripad