The polar equation of a curve C is r^2 = 2 sin 2Ѳ.
(a) Find a Cartesian equation for C.
(b) Show that C could be represented parametrically by the equations
x =(2t)/(1 + t^4), y = (2t^3)/(1+t^4)
where t is a parameter.
Iíve done (a). But how can I solve (b)?