Open source cross-platform software of geometry, analysis and simulation - Yves Biton
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MathGraph32 JS : Graphing a discontinuous function

publication Tuesday 24 April 2018.

Shows how to use MathGraph32 to graph the function defined by $f(0)=0$ and, if $x \ne 0, f(x)=int(x)/x$

Double click on the video to watch it in full screen mode