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.

I’ve done (a). But how can I solve (b)?