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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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  • This does not make any sense to me :-)

    restart:
    A := Matrix([[seq(i, i = 1 .. 10)], [seq(i, i = 11 .. 20)], [seq(i, i = 21 .. 30)]]):
    A[.. -1,..] ;
    A[.. -2,..] ;



    You would assume that A[..-1,..] would remove the last row but that is not the case!
    Instead you have to do A[..-2,..] he he it seems a bit odd!

    This is a problem I've had with the new mapleprimes. Contributions listed as "answers" to a question are listed according to the number of votes they receive. This is a system used on forums like mathoverflow, for instance, websites designed to provide answers to specific questions, websites where "discussions" are discouraged. But, in my opinion, mapleprimes is both a discussion and question/answer forum and the "rank by vote" is not suited to it.

    In the example I...

    The MRB constant Z will probably have several parts.

    The following example is from the Maple help pages
    > with(GraphTheory);
    > with(SpecialGraphs);
    > H := HypercubeGraph(3);
    DrawGraph(H)
     
     


    What I would like to do in the MRB constant z,  MRB constant z part2, and etc. is to draw a series of graphs that show the some of the geometry of the MRB constant.

    See http://math-blog.com/2010/11/21/the-geometry-of-the-mrb-constant/. I would like to draw a tesseract of 4 units^4, a penteract of 5 units^5, etc and take an edge from each and line the edges up as in Diagram 3:

    `` 

     

     

     

    As usual I'm asking for your help.

    ``

    ``

     

    Download May262012.mw

     

    Just wanted to let everyone know that there is a Maple 16 update available. Maple 16.01 includes improvements to the mathematics, interface, and plotting capabilities of Maple, including:

    • Enhancements to the Physics package in the area of general relativity
    • Translations of tutors and assistants into French and Brazilian Portuguese
    • A correction to the problem in plotting multiple plots at once in non-Cartesian coordinates, as

    Using techniques previously used for generating color images of logistic maps and complex argument, attached is a first draft of a new Mandelbrot set fractal image applet.

    A key motive behind this is the need for a faster fractal generator than is currently available on the Application Center as the older Fractal Fun! and Mandelbrot Mania with Maple entries. Those older apps warn against being run with too high a resolution for the final image, as it would take too long. In fact, even at a modest size such as 800x800 the plain black and white images can take up to 40 seconds to generate on a fast Intel i7 machine when running those older applications.

    The attached worksheet can produce the basic 800x800 black and white image in approximately 0.5 seconds on the same machine. I used 64bit Maple 15.01 on Windows 7 for the timings. The attached implementration uses the Maple Compiler to attain that speed, but should fall back to Maple's quick evalhf mode in the case that the Compiler is not properly configured or enabled.

    The other main difference is that this new version is more interactive: using sliders and other Components. It also inlines the image directly (using a Label), instead of as a (slow and resource intensive) density plot.

    Run the Code Edit region, to begin. Make sure your GUI window is shown large enough for you to see the sides of the GUI Table conveniently.

    The update image appearing in the worksheet is stored in a file, the name of which is currently set to whatever the following evaluates to in your Maple,

    cat(kernelopts('homedir'),"/mandelbrot.jpg"):
    

    You can copy the current image file aside in your OS while experimenting with the applet, if you want to save it at any step. See the start of the Code Edit region, to change this filename setting.

    Here's the attachment. Comments are welcome, as I'd like to make corrections before submitting to the Application Center. Some examples of images (reduced in size for inclusion here) created with the applet are below.

    This post can be downloaded here:  Download May202012.mw

    Below we have approximations involving the MRB constant. The MRB constant plus a fraction is saved as P while a combination of another constant is saved as Q. We then subtract Q from P and always have a very small result!

    I am finding, if you add to an old question directed towards someone at maplesoft before the weekend but after a maplesoft business day has ended, your question may not be answered or addressed. This is because your new question in the thread has been swamped by newer questions and yours has trickled down the list and essentially becomes buried or lost. 

    I also find too much information related to posted questions are being summarized in the top level making it...

    Being easy to use is nice, but being easy to learn with is better. Maple’s ease-of-use paradigm, captured in the phrases “Clickable Calculus” and “Clickable Math” provides a syntax-free way to use Maple. The learning curve is flattened. But making Maple easy to use to use badly in the classroom helps neither student nor instructor.

    In the mid to late ‘80s,...

    In memory of a Friend. Maple 16 for Russian students.

    260412.zip

    Оформление - облегченное, чтобы работало на любом компьютере. Разархи и открыти файл ege.html. Неточности присутствуют, наверное. Поправим вместе.

    The basic plot routine in Maple 16 has a serious problem with the domain.  The following is an example.

    The domain is correct in Maple 15.  This failure occurs in both Windows 7 and Linux.

    I have been generating graphics in Maple 16 using the plotsetup(ps,...) command under Windows 7 and Linux.  Maple tech support has a fix for Linux and has confirmed that there is a bug in the Windows version.  These are a Windows eps (converted to png for uploading) and png of the same figure.  The eps conversion should not do this.

    There is no option to change your original email address and save in mapleprimes. 

    **edit add**  Sorry the option is there but the option to save the new email is not.

     

    Just a small digression.  It would be nice if the numbers on the x-axis could be rotated or angled so it does not look like they collide with each other.  When the numbers reach the 100's or 1000's there will be congestion. 

    This is perhaps a suggestion for a future Maple version as the current versions do not support number rotations on the axis.

     

    The Locator object is a nice piece of Mathematica's Manipulate command's functionality. Perhaps Maple's Explore command could do something as good.

    Here below is a roughly laid out example, as a Worksheet. Of course, this is not...

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