1. The problem statement, all variables and given/known data 2. Relevant equations x=-f'(t) y=f(t)-tf'(t) 3. The attempt at a solution Solution in picture. This is the solution to this problem, but I have no idea where the y^2=4t^6 comes from. Doin this problem I get everything up until y=2t^3 and then using x=3t^2 I solved for t and plugged it in, but that's not working. I did every other clairaut's problem like this, but I have no idea where this one goes after the y=2t^3 step.