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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  • It's nice that the plot command tries to warn the users about incorrect inputs: [> plot(sin, x=4..6); Error, (in plot) invalid plotting of procedures, perhaps you mean plot(sin, 4 .. 6) [> plot([cos,sin], x=4..6); Error, (in plot) invalid plotting of procedures, perhaps you mean plot([cos, sin], 4 .. 6) However, there is a shortcoming that I suggest should be fixed: These lines produce a warning and an incorrect plot [> plot([cos,sin(x)], 4..6); [> plot([cos(x),sin], 4..6); [> plot([cos(x),sin(x)], 4..6); Whereas these lines produce no warning and an incorrect plot
    Here it is. If you are running windows vista on your machine and installed maple 11, you will shortly notice that you cannot save documents which is a little annoying. After a lot of reading and understanding how maple works as a sofware, I figured out that maple installs its own version of Java Runtime Envenrinement commonly known as JRE. The hick is it is not compatible with windows vista. Here is the solution I propose for you: 1. Go on Java sun`s website and download the latest JRE version. You will need to install it... https://sdlc5e.sun.com/ECom/EComActionServlet;jsessionid=A61F1EC27C11159DC1B22D3FBC2E7AB0 this is the website of the latest version I know of.
    Hello! So glad to become a part of this community, I am loving Maple. So here is my question: I know c++ fairly well (need to freshen up) and the same idea with Java, Ive seen I can incorporate languages into Maple, or so it seems. What type of things am I capable of doing? And along those lines, any suggestions to what path to take in order to learn such powerful tools? I am currently working on a bachelor/masters in engineering and would love to know Maple better then I do my own Fiance (just dont tell her). Thanks in advance!
    How do i find the coeff? It is not working! > restart: > alias(epsilon=ep); epsilon > eqn := ep*x^4 - 3*x^2 -2*x + 1; 4 2 eqn := epsilon x - 3 x - 2 x + 1 > eqn1 := simplify(subs(x=ep^(n)*y,eqn)/epsilon^(1+4*n)); 4 (-1 - 2 n) 2 (-1 - 3 n) (-1 - 4 n) eqn1 := y - 3 epsilon y - 2 epsilon y + epsilon > asym1 := sum(y[n]*ep^(n), n=0..3); 2 3
    Can evalc be persuaded to return for
    assume(x::complex):
    +1/2*evalc(x + conjugate(x));
    -I/2*evalc(x - conjugate(x));
    
    the real and imaginary parts of x, respectively, i.e., Re(x) and Im(x). Further, can evalc be persuaded to let
    assume(u::complex,v::complex):
    evalc(Re(u)+Re(v)-Re(u+v));
    evalc(Im(u)+Im(v)-Im(u+v));
    
    return zeros identically? It does return zeros identically if either u or v (or both) is real-valued. But not if u and v are both assumed complex-valued. Why not?
    Increasingly, I see the need to distribute a Maple worksheet with some auxiliary files. These extra files typically contain additional Maple code. These extra files could be a command file, a Maple libray archive (mla) or an image (for use in a maplet, say). I can create my own ZIP archive to e-mail, but I would like to be able to post some of these resources on my website in a format that they can be automatically executed when downloaded. I understand that there are some potential security issues here, but I still like to see if there cannot be some support for this functionality. What I have in mind is something very similar to the way attachments are handled in e-mail with multi-part MIME.
    I got an interesting question about integration yesterday. The question was about the integral of the rather innocuous looking function f := sqrt(1+sin(x)). The inside of the square root is always non-negative so the function is continuous (and bounded!) so it must have a continuous integral. The question I was asked, was if the following result was a bug in Maple: Int(sqrt(1+sin(x)),x) = (2*(sin(x)-1))*sqrt(1+sin(x))/cos(x) since the right-hand side is definitely not continuous at x=-Pi/2 + 2*n*Pi!
    Using MAPLE V, Release 10, Elliptic Integrals have been presented. Furthermore, the author proposes approximations based on both FOURIER and TAYLOR series.
    Below is a link to a file I uploaded showing an example of using assigning the value obtained from eval() to a variable and then using evalf() versus using eval() inside of evalf(). The fact that there is some difference is not surprising; it's the sheer amount of difference that amazes me--up to 100%! Do also note that the difference "settle down" over time, which is to be expected. View 413_odd_rounding_example.mw on MapleNet or
    Hello everybody, does anyone know how to integrate the output of BsplineCurve in maple 8? I can plot it over a given interval, but if I try to perform the corresponding definite integral, I get the following error message: Error, (in int) wrong number (or type) of arguments as opposed to the output of the Spline routine, which can be integrated without problems. Thank you for your help.
    Hi. Issue: Anytime I open a recently saved Mpl worksheet, all of my 2D-MATH has been erased and replaced with a simple question mark (?).. And I've tried to open it on a Linux-based OS and trying executing it for like a hundred time. Nothing seemes to work.. Solution needed. Thanks for your time and help. Vic
    Is it possible to have installed both Maple 9.5 and Maple 11 without interference? The reason I ask instead of just trying it out myself is that when I tried to uninstall Maple 11 some days ago (in connection with my roll-back to Maple 9.5) it got stuck. So instead of risking that again, probably with some unfortunate consequences for the integrity of the registration database, I thought I might just ask your guys first. Some of you might wonder why I want to have both installed. But I thought that I might continue using Maple 9.5 for my usual research, and then using Maple 11, possibly in conjunction with a text editor, for things which cannot be done using Maple 9.5.
    I would like to see a solution to Exercise 5 at the end of Chapter 6 in the 2007 edition of the Maple 11 Introductory Programming Guide. It's on page 255. My humble attempt is: View 4937_Chapter6Exercise5.mw on MapleNet or Download 4937_Chapter6Exercise5.mw
    View file details I am asking this question because in the past the answers have been way cool, magic happens!
    This morning, I saw the announcement of a paper on the ArXiv, titled Inequalities for Integer and Fractional Parts. I found the results very pretty, even though many of them are rather weird. But then it struck me: this ought to be useful. In fact, it ought to be useful when doing experimental mathematics, something for which Maple is rather helpful. So why the blog post? Because of the next realization: I don't really know how I would 'integrate' this knowledge into Maple. Whatever ideas I come up with to do this seem less than half-baked.
    In my work developing Maplets for Calculus, there are many instances when I want to determine that a function is monotone (decreasing or increasing or non-decreasing or non-increasing) on an interval. If I can do one of these, I can do them all. So, let's focus on decreasing. I have no problem assuming f is continuous and differentiable on the interval. The interval could be unbounded, and I am not terribly concerned about endpoints (at least now). Given a function f, how would you use Maple to determine that f is decreasing on an interval (possibly unbounded)?
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