MaplePrimes Posts

MaplePrimes Posts are for sharing your experiences, techniques and opinions about Maple, MapleSim and related products, as well as general interests in math and computing.

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  • While marketing material naturally talks about new features in a release, we of course also put considerable effort into investigating and correcting problems with the product. Many of these fixes are in direct response to problems reported on MaplePrimes.  Thank-you. We recognize that reporting these issues takes time, and we really appreciate your help in making our products better.

    As a follow up to the original announcement, I thought I’d include a few more details on some of the new features in Maple 13 designed for engineers. For more information, visit the What’s New pages for professionals and for engineering education.

    As a follow-up to the original post, I thought I’d mention a few of the additional new features particular to math education. For more information, visit the What’s New section of the website.

    Concept Learning Tools: Maple 13 includes new and improved concept learning tools:

    With the release of Maple 13, we have also released a major new feature to Maplesoft.com, Online Help:

    Maple Online Help

    Every one of Maple's help pages is now available online. With this new feature, you will be able to view the help pages right in your browser and download the source Maple worksheet to interact with in Maple.

    We are pleased to announce that we have just released new versions of Maple and MapleSim!

    Here are some highlights from the new releases:

    Maple 13 includes completely new 3D plot facilities, which are faster and use less memory. Another nice benefit is you can now annotate 3-D plots just like you do 2-D plots, including proper math notation in titles and labels, tickmarks in multiples of pi, and arrows. You can also create fly-through animations, which zoom a virtual camera around your 3-D plots. We’ve put a few examples on our website…take a look.
     
    Writing multithreaded applications is now a whole lot easier using a new task-based programming model. You no longer have to worry about synchronization tools – Maple handles that part.  For example, here’s an interactive Mandelbrot application that uses the task-based model to automatically distributes the calculations to all available processors.

    And the in small-but-useful category, Maple 13 now includes an Export to PDF option.

    For more information on these and many other features, see What’s New in Maple 13.

    MapleSim 2 includes a really cool new 3D animation feature for multibody systems. You just define the model, and when you run the simulation, MapleSim automatically creates an animated version of your model so you can really see what is going on.  You can even attach your own STL shape files, so the animations look more realistic…take a look for yourselves!

    MapleSim 2 also includes a results manager that lets you keep track of the results of different simulation runs. Previous results can be viewed without having to re-execute the simulation, and are accessible from one session to the next.

    For details, see What’s New in MapleSim 2.

    Click here to read the full press release.
    Click here to see what Maplesoft President & CEO Jim Cooper had to say.
     

    I don’t think anyone would argue that the last few years have been pretty eventful. Modern industry is facing critical challenges, as design tasks become increasingly complex. Fortunately, we are seeing the development of new technologies that are allowing us to rise to the challenge. Techniques like rapid plant modeling for control applications, robust formulation techniques for automatic model generation, and the application of symbolic computation technology are accelerating the modeling process while ensuring correctness and sound scientific principles. The world of engineering is changing, and I’ve been fortunate to watch some of these developments first-hand.

    1/2 hour ago I got from Norton Antivirus:

    Hello all, I am running maple 12, linux version. I was wondering, if using the command line version instead of the graphic Java interface makes any difference in speed (when running very 'hard' algorithms, which are likely to run for several days). Thanks in advance. George

    I am running Maple 12 under vista.  All my programs begin with "restart" but each time I "restart" Maple goes off into never never land.  That damn circle that used to be an hour glass just spins and spins and when I hit the "stop" button, Maple asks if I want to disrupt a computation.  But there is no computation.  Have others experienced the same problem?   I can't run anything unless  avoid "restart"ing.              .....Edgar

     

    I am not sure where is the proper place to report the following bug.

    input:
    version(); interface(version); kernelopts(version);
    u[1] := proc (t) options operator, arrow; 1+2*t+3*t^2+4*t^3+t^4+t^5+t^6+t^7+t^8+t^9+t^10 end proc;
    u[2] := proc (t) options operator, arrow; t end proc;
    save u, "/home/user/test.txt";
    restart; read "/home/user/test.txt";

    output:
    User Interface: 277223
             Kernel: 277223

    Hey guys, I've had this problem for over a year already and I never took the time to resolve it.

     

    On previous version of Maple, it was always very slow to load the help menu. Now in Maple 12, it freezes Maple completely.

     

    What can I do to fix this?

    Hi All,

    I'm trying to use implicitplot to plot a function of two variables, x and y, with the additional constraint that x > y.

    Is there any way to do this?  I have tried to use assume by the command assume(x-y, positive).

    Maple recognizes the assumption, but when I try to plot with this assumption imposed it just won't plot (I get "Error, (in implicitplot) could not evaluate expression")

    Any idea how to do this?  Is it possible?

    Thanks,

    JonasM

    Besides availability of that forum (our admin would be fired for such) or loading time (quite boaring today) it seems that threads may be  in a strange state, which do not allow them to be viewed. The last time I just ignored that, but as it may be a technical problem here is an example:

    http://www.mapleprimes.com/forum/pointinflection

    For me it was not possible to opne it by a click yesterday, so tried it at work today and gave up after 5 min (?) waiting on a fast connection. Now at home again the problem persists.

    The integral of a derivative should return the same expression, or maybe, different by adding a constant. Try something simple,

    diff(2*arcsinh(x^(3/2)/sqrt(2))/3,x);
    
                                   1/2  1/2
                                  2    x
                                -------------
                                        3 1/2
                                (4 + 2 x )
    
    int(%,x);
    

    The answer is too long to paste, and I didn't check whether it is correct, or wrong.

    Alec

    When I was a toddler and learning about the concept of numbers, I used to play a simple game with my parents.  They’d think of a number, and I’d try to guess it.  They would shout “hotter!” if I were getting closer to the number and “colder!” if I was getting further away.  I’m still fascinated by number games, but now it’s Sudoku, the Countdown numbers game… or balancing my bank account at the end of the month.

    I spent many of my callow teenage years playing games of chance involving dice and cards.  But it was only after I stopped playing that I stopped losing money. I guess at that time I never really understood the Gambler’s Fallacy, or probability itself.

    (Pop quiz: Toss a coin 40 times - what are the chances of getting six heads or six tails in a row? The answer’s in a post script below, together with some Maple code.)

    At university, I became fascinated by a UK quiz show called Countdown (and not just because I had a crush on Carol Voderman – an ex-presenter).  In one of the rounds, the contestants have to find the combination of additions, subtractions, multiplications and divisions to make six seed numbers equal a target. 

    I’ve attached a Maple worksheet that automatically solves the Countdown numbers game (a simple click of a button asks Maple to find the solution for you).  Kent – one of the sales people I work with – was so fascinated by the worksheet that he spent an entire weekend playing with it, much to the displeasure of his wife and kids. 

    Now, if I want some mental stimulation, I often crack open a book of Sudoku puzzles I’ve got lying around. By the time I’m bored, I usually break out Joe Riel’s fantastic Maple-based Sudoku solver.

    P.S The following Maple procedure gives the probability of k heads (or k tails) in a row out of n coin tosses.

    Many people underestimate the chances of getting 6 heads in a row out of 40 coin tosses, and find it hard to accept it’s as high as 26%.  Given a large enough sample size, the improbable is likely to happen.  How else do you explain the English football team finally having a run of wins?

    Download the attachment: CountdownNumbersGam.mw

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