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Best graph software ?

  1. Dec 2, 2008 #1
    Hi there,

    Which is best graph software to plot the following functions?

    2.5 + 10/Pi sin1/4.Pi.t


    2.5 + 10/Pi ∑ 1/(2n-1) sin (2n-1)Pi.t/4

    Limits for ∑ are: top = 20 bottom = n=1

    I want to show the first 20 terms of this series.

    I’m trying to show how Fourier series is made up off many trigonometric functions.

    Can someone suggest a good program to use to plot these graphs?

  2. jcsd
  3. Dec 2, 2008 #2
    I've only used Maple and MATLAB, they are easy to use but expensive. I recently heard of Sage: http://www.sagemath.org/index.html

    It's free and looks very powerful but I've never used it before.
  4. Dec 2, 2008 #3
    Another free but powerful combination is the computer algebra system Maxima in combination with GNUPlot.
  5. Dec 3, 2008 #4
    I second what slider142 wrote. Try using Maxima. A nice 10 minute tutorial can be found here.
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