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Does anyone know of a free graph plotting app for windows (or online) that can plot something like this?

Xn+1= r sin (π * Xn)

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4 Answers

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I'd like to suggest WolframAlpha, but it has got troubles with the "r*", the best I could do is this. Hope it helps.

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Definitely helps. I just tried this g[n+1]==(4*(sin(g[n]*Pi))) (wish I could get the graph could be a bit bigger though). – Nifle Oct 14 '09 at 20:29
Click the Download as PDF at lover right, the graph there is LITTLE bit bigger – sYnfo Oct 14 '09 at 20:31
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And - I forgot - you can install Mathematica Player, click the Live Mathematica in lover left corner and resize the graph however you want. :) – sYnfo Oct 14 '09 at 20:52
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up vote 3 down vote

I'd try Gnuplot or Octave/Matlab. If you had an Apple, the built-in Grapher would do the job. Also, Spacetime (Win+Mac) looks promising.

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wow, spacetime is awesome – detj Nov 23 '09 at 22:23
+1 for that Mac Grapher app... very cool stuff! – Optimal Solutions Jan 9 '10 at 4:52
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up vote 1 down vote

See Science: Math: Software: Graphing for a few dozens of plotting applications.

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I would recommend matplotlib (requires some basic python knowledge). The documentation is still under development, so mastering MPL can take some time, but it's obviously worth it in the end, if you take a look at the examples here.

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