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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 was just wondering what a good book to learn engineering related mathematics with maple would be? There's one on the website of maplesoft but 125 seems a lot to pay for a book I'll use just for fun. So do you guys have any suggestions? Thnaks
    Is it possible to have the output of dismantle assigned to some variable, or written to some file? Please correct me if I am wrong, but it seems to me that it cannot be persuaded to return anything but NULL, a fact which completely surprises me, if indeed true, for what is the benefit of that?

    This is a long shot, but I think Maplesoft should open up its bug database and allow MaplePrimes users to vote up or down on bugs, reddit style. This would provide direct feedback about which bugs really affect people. Behind the scenes you could cross-reference the votes with account data to get all kinds of useful information: like what bugs disproportionally affect new users, or what bugs annoy experienced Maple users the most, etc. This would allow you to focus attention...

    My recent post You read my mind made me skim through the old thread Width and depth. That reminded me that MapleSoft has never responded to the post Matrix and Vector construction shortcuts by Mariner, in which he (as I would most certainly appreciate too) calls for some illumination from MapleSoft on the whole area discussed in that thread.
    Hi everyone, I need help with solving my integrals Please see attached file Download 7055_integrals.pdf
    View file details
    Consider the following four-dimensional matrix of four-dimensional matrices (they are the generators of the vector representation of the Lorentz group):
    metric := Matrix(4,4,Vector([-1,1,1,1]),shape=diagonal):
    generators := Matrix(4,4,
    	(a,b) -> metric . Matrix(4,4,
    	(c,d) -> metric[a,c]*metric[b,d] - metric[b,c]*metric[a,d])
    );
    
    The expression is antisymmetric in the indices a and b, i.e., the (outer) matrix is antisymmetric. So, to optimize my code (especially important, I suppose, when going to higher spacetime dimensions) I thought I would try adding the option shape=antisymmetric:
    Right now (noon, Friday, 14 December) all 10 items in the Recent Comments are related to one forum, all within the last hour. I think this is the first time I have seen this. While a number of these comments are my own, I think this points out a problem others have made in the past. During active times, many comments get cycled out of Recent Comments before they are seen by regular readers. I would like to see this list given more space. Could it be expanded to keep all comments made in the past 6 hours (or the last 10 comments during slow periods). Maybe Active Forum Topics could be expanded a little, too. It would also be helpful to know how many posts are in a particular discussion and when the last comment was made. This information is available in other parts of MaplePrimes, can it be presented in a more concise form on the main page?
    a bus travels 200 km at a constant speed. a car travelling 10 km/h faster than the bus, completes the same distance in 1 hour less than the bus. (1) how many hours does the bus take to travel the 200 km? (2) what is the speed of the car?
    I am trying to use the EllipticE and EllipticF functions in an expression. The proper function call is EllipticE(z, k) where z = algebraic expression (the sine of the amplitude) k = algebraic expression (the parameter) I get exact agreement for 0 <>< value="" value=""><><>
    I have a very long Equation and I need to simplifying it, I don't know how to use Maple is it possible one helps me how to do it? or simplifying it for me. Can Maple do it and how it will looks like?? my equation is d/h = ((((T / SK) + (T * -0.390527)) / (((T + -0.421559) * (SK + (SK + ((SK / (SK + (((T * -0.39954) + (SK + (T / SK))) + SK))) + SK)))) / T)) * -0.376824) If one can help to restructure it and give a simple one from two parts only, it will be so nice
    This isn't specifically Maple-related; but mathematics-related; related to Linear Algebra and Modern Algebra. While reviewing Linear Algebra; I ran across the concept of "Similar Matrices"; which are defined as: if A,B are nxn matrices and there exists invertible nxn matrix P such that P^(-1)*A*P = B then A is similar to B The payoff was: if A, B are similar then they "have the same eigenvalues" (the characteristic equation is same for both A and B). (Here we are talking about the group of invertible nxn matrices, with operation matrix multiplication) --
    The command "latex(expression)" attempts to generate LaTeX commands that will recreate the expression in LaTeX. For example; latex(%) will try to generate LaTeX commands to recreate the last output from Maple. Let's say I had just entered the Maple command to display an integral; for example: Int(Int(Int(rho^2*sin(phi),rho=sec(phi)..5*sec(phi)),phi=Pi/6..Pi/3),theta=0..2*Pi); If I would like to put that same integral in a LaTeX document; I could enter the following command: latex(%); Which, in Maple 9, returned: \int _{0}^{2\,\pi }\!\int _{1/6\,\pi }^{1/3\,\pi }\!\int _{\sec

    Why not put the entire Maple help-system online? I mean, as html. No served .mw or plugins. No huge .pdf downloads. Just the goods, one page per routine, that load and render fast for every half-decent browser. No registration and login would be nice too. Consider the competition's sites, here and here. Wouldn't that be another...

    There's an interesting set of posts on comp.soft-sys.math.maple about post-processing .eps plot output from Maple. Here's a link via Google Groups. The author's ideas revolve mostly about processing tickmarks and subtickmarks and replacing them with symbols. The claim is made that it's harder (or impossible) to do some things in Maple for .eps output that are possible in Mathematica or Matlab. I haven't yet tried or looked hard at the posted code, or verified the claim.
    I'm a relatively new user of Maple, and I use it to teach high school mathematics. I've noticed that when Maple expands an expression like (x+y+z)^6, the terms come out in a different order each time the operation is done. If 6 students do it on 6 computers we get 6 different orderings. Is there an explanation for why Maple's algorithm does this that would be potentially comprehensible to my students (they are quite curious)?
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