![](https://i0.wp.com/whatifmath.org/wp-content/uploads/2016/08/thumbnail.lissajousfigures.jpg?fit=210%2C280&ssl=1)
We often see Lissajous figures in old sci-fi movies because they are so cool. As you play with them I think you will find them as fascinating as I do. They created those figures by graphing points as a function of a third variable (the parameter). We can do the same and in the process come to understand Parametric Functions.