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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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    I've been working with fsolve and I'm having the following issue: fsolve({dif_Fliq=((nFsol-nFliq)/(psi_sol-psi_liq)),dif_Fliq=dif_Fsol},{psi_sol=0.1..0.9,psi_liq=0.1..0.9}); {psi_liq = 0.4447971078, psi_sol = 0.3459845910} how do I get the value of psi_liq and psi_sol and assign them to a different variable without having to copy the whole thing? i.e. if I use the following command assign(result_liq,psi_liq); I get result_liq=psi_liq = 0.4447971078 not what I want result_liq = 0.4447971078 I also tried: result_liq:=psi_liq and I ended up with the same result

    An attempt at question 2 of the xkcd Velociraptor Math problem (mentioned on this blog post). The parameters and events facilities of

    There is no released Classic interface to accompany the 64 bit version of Maple (12, 13) for the 64 bit Windows XP64 operating system. Personally, I prefer running the Standard over the Classic interface, although sometimes I miss common subexpression display for lengthy symbolic output.
     
    The Maple Classic interface appears to talk to the Maple kernel only over a socket (or similar), and the...

    Hi. I run Maple on 64-bit linux. I have tried to run the same commands from xmaple and maple I do not get the same result. I would very much like to be able to create postscript graphs from the command-line. However the result of the commands at the bottom of the screen is a black graph, which is NOT logarithmic. However when I run the same commands from the xmaple, the results work perfectly - a red graph on a logarithmic plot. The commands are: plotsetup(ps, plotoutput="graph.ps"): plot(exp(x), x=1..20, color=red, axis[2]=[mode=log]);

    As many of the users on MaplePrimes are instructors, I thought it appropriate to let everyone know about a new resource available on the Maplesoft web site called the Teacher Resource Center.

    Dual- and quad-core PCs are now ubiquitous.  While making your operating system a better multi-tasking environment, they’ve had a limited effect on the code that most technical professionals write.  This is largely because of the perceived difficulty of parallel programming.   The evolution , however, of high-level languages that support multi-threading throughout the 90s and beyond, removed the need to manage threads at the low level, allowing engineers to concentrate on what part of the algorithm could be run in parallel.  Given the ever-increasing complexity of systems that have to be simulated, multi-threaded programming can offer significant time savings for many the problems that can be easily parallelized (and for which time-savings of parallelization outweigh the overhead).

    It’s a small world, but there are still too many borders.

    I’ve recently become a fan of country music.  It amazes and amuses my wife and children, but I find that country music tells stories that contain some very basic truths.

    Brad Paisley sings a song named “Welcome to the Future”.  He begins that song by telling his grandfather’s story of being a soldier in the Philippines fighting the Japanese during World...

    As most users of MaplePrimes are aware, we currently reward participation with a number that indicates Maple Rank. So every time someone posts a forum comment, for example, they are awarded 1 point. This number gets appended to user names and it has become a way to immediately recognize a person’s ‘prestige’ within MaplePrimes.

    In this post I'll take a closer look at the ways in which Maple code can be thread unsafe. If you have not already seen my post on Thread Safety, consider reading that post first. As a brief review, a procedure is thread safe if it works correctly when run in parallel.

    The most obvious way in which procedures can be thread unsafe is if they share data without synchronizing access (using a Mutex, for example). So how can two threads share data?

    We’ve just released a new version of the Maplesoft-MAA Placement Test Suite (PTS). PTS 5.0 includes high school prognostic tests from the MAA. The idea is that colleges/universities can offer early feedback to high school students about how they are likely to do on the institution’s math placement tests. With early feedback and time to make changes, students will be better prepared, which means they are less likely to have to take (and pay for!) remedial classes that don’t even count towards their degree.

    sum(1/(n^4+n^2+n),n=1..infinity);
    
      -infinity
    
                             /   -----                               \
                             |    \                2                 |
            signum(-1 + 1/31 |     )      (4 _alpha  + 13 - 6 _alpha)|)
                             |    /                                  |
                             |   -----                               |
                             \_alpha = %1                            /
    
             + gamma + 1/31
    
            /   -----                                               \
    

    There is something profoundly satisfying when something that goes “viral” on the Web has some connection to your life. This happened recently when I and my colleagues were pointed towards a video of some laboratory robots that somehow drew almost a million views on YouTube alone. For an engineer,...

    Has anyone compared timings of Maple executing under Windows XP and Windows 7? It means, with the same PC and booting in either OS.

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