Hi,

I am trying to solve the following question:

For the plane curve $\displaystyle r(t) = (t, t^2)$ , find a parametric equation of its evolute.

I looked at this website: Parabola Evolute -- from Wolfram MathWorld

From there I get the cartesian equation? Is there a general formula for evolute? I am not sure which equation to use from Evolute - Wikipedia, the free encyclopedia . Can someone point me in the right direction? Thanks