Lissajous choice --- Introduction ---

A Lissajous curve is a parametric curve in dimension 2, described by a pair of functions
{x= cos(nt) y= sin(mt+a).

These curves occur often in the study of electronics. They form a good example of parametric curves.

This online exercise can either plot a Lissajous curve and ask you to recognize its equations among a list to choose from, or give a pair of equations and ask you to recognize the plotted Lissajous curve among a list to choose from.

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