Hi all, I want to convert a curve from polar coordinates function to a parametric function. The function is: [itex] r = 2 \cdot \cos( 4\cdot\theta )[/itex] I want to convert this for ( x(t), Y(t) ). Why do I want this? Because I saw that wxMaxima make plots of parametric functions, but I don't know how to plot polar functions. Thank you.