(a) Find a vector function, r(t), that represents the curve of intersection of the two surfaces.
The cylinder
x2 + y2 = 25
and the surface
z = xy
r(t)=??
(b)Find a vector function, r(t), that represents the curve of intersection of the two surfaces.
The paraboloid
z = 7x2 + y2
and the parabolic cylinder
y = 2x2
r(t)=???