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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  • As a solution to solve the disjointed answers here on mapleprimes for answers bubbling up and causing a terrible mixed flow of answers.

    I propose that users have the option to have the answers sorted by date answered OR by thumbs up.  That way the flow of an answered post(question) can be followed properly or the user may just want to see the best answer first.  However I find in general I want to read all of the answers to the post but bubbling is not good...

    This is the second post in a four-part series that started with this post: Generating...

    Maple's Statistics package contains many predefined probability distributions; well-known ones such as the normal distribution and lesser-known ones such as the Gumbel distribution. For these distributions, we ship efficient algorithms that can quickly generate a large number of sample points. To generate a sample of size 106 of both of these distributions, and print the time it took to do this (in seconds), you can run the following:

    with(Statistics):

    Consider the following C code:

    I've received a suggestion offline saying that I should animate the Pacman. There are two items to animate: Pacman's mouth and pac-dots. To review how pacman's mouth moves, please have a quick look at Google Pacman doodle.

    Pacman's mouth only has three stages: open, half open and close. Let's take the pacman that I created in the previous post. Each frame of the animation is done by adjusting the radian values of the "pie" (aka Pacman's body and mouth).

    I stumbled upon this interesting quirk.  My apologies if it's already been brought up.  This is for Maple 12 on a 32 bit windows machine.  It's possibly different for newer versions and operating systems. 

    restart;
    gc();
    memory usage displays 1.37M

    restart; gc();
    memory usage displays 0.43M

    The point was that it uses more than a half a megabyte more if gc() is put on a seperate line ... interesting..

    This describes in more detail (with permission and citation) the method posted here of solving problem 2 in the XKCD comic Substitute.

     

    Download RaptorMath.mw

     

    Today is my birthday, and in fact it is also the birthday of at least one other Maplesoft employee (not surprising since more than 23 people work here - considering the generalized birthday problem, I even know of 3 people here who share the same birthday).  Of course, it turns out that birthdays are not evenly distributed through out the year and so I wanted to know if someone with an August birthday is more likely to share than someone with an April birthday. 

    My goal is to make maple better so here I am going to point
    out another annoying thing in Maple. If you for example want to have
    two plots side by side (I know your question is about two plots in the
    same chart but I still think is relevant) in an array then such a array becomes very hard to delete.

    A:=Aray(1..2):

    A[1]:=plot(....)
    A[2]:=plot(...):

    display(A);

     

    plot1    plot2


    Now the Array A...

    Look at this article (Its loading can take a few minutes: approximately 5 MB.). All those pictures could be created with Maple.

    PS. Working link to  the article.

    A new version of the Maple T.A. MAA Placement Test Suite is now available.  The latest release includes a new Calculus Concepts Readiness Test, based on modern research into calculus assessment. It also includes performance improvements when dealing with large student populations, and tools for integration with Moodle™ and other course management systems. To learn more, visit What’s New in PTS 6

    Just for fun, I've created a Pac-Man using Maple's plot command:

    body := plottools[pieslice]([0, 0], 5, (1/6)*Pi .. 11*Pi*(1/6), color = yellow):
    eye := plottools[pieslice]([-1, 2], .5, 0 .. 2*Pi, color = black, filled = true):
    plots[display](eye, body, axes = none);

    The hairpiece for Ms. Pac-Man can be added easily:

    Continuing on in this series of posts, here is a way to test the randomness of a sequence of bits from a PRNG that is the appropriate to the first morning back after the August long weekend.  It is a very fast, and not very formal test done by checking how well a sequence compresses. This is really easy in Maple 14, with the new commands ?StringTools:-Compress and StringTools:-Uncompress which use ...

    I've been seeing a lot of double posts lately which means there is a site problem/issue.  I hope the cause of this issue is under investigation for improved updates for mapleprimes.

    I'm finding that posts get burried very quickly in the new forum. 

    Also why can't we have the second level selection look like the first level (as seen here www.mapleprimes.com/posts)  ?  Unexpanded question topics (no summary)

    I find the summary info as added fluff the forum doesn't need. 

    So do something like as the old one was (simplified with topics only here just for clarity and directory structure)

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