SuperficieDiRotazione

a = CurveCartesian(u, u^(2), 0, u, -4, 4)
f: y = x^(2) + z^(2)
v = 2 (slider from 0 to 3)
eq1: x^(2) + y^(2) + z^(2) - v^(2) - v^(4) = 0
p: y = v^(2)
c = IntersectPath(p, f)
A: (v, v^(2), 0)