6. Use the divergence theorem to find the outward flux F . ndS, for: S a). F = xi + yj + zk, where S is the surface of the region bounded by ' ty' = 1, z = 0, z = 1. b). F = 3x y' i+ yj -6zxy-k, where S is the surface of the region bounded by the paraboloid z = x2+ 2 and the plane z = 2y