For Your Mathematicians: Plot Functions & Equations With Color Differentiation

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Link: graph.tk

 

Plot multiple functions on the same axes:

 

http://gyazo.com/3b21deae44d86dfb14e1f50bf063cc81.png

 

Show only some of the plots by un-clicking them:

 

http://gyazo.com/e6e18c60d3a61e5824667efc893fba97.png

 

More information: graph.tk

[CyberNerd]

Geogebra also runs in a webstart java applet.

you can install it on your own servers, ie in moodle.

 

http://www.geogebra.org/webstart/geogebra.html