S is the surface with parametric equations x = 3u+v, y = 3u-v, z = uv for (u, v) in the region D in the uv-plane bounded by the curves v = u^3 , v = 1, and u = 0. (a) Evaluate double integralS of (((x + y)^2)z^2)/(squareroot(x^2 + y^2 + 36)) dS (b) For S oriented with the unit normal vector pointing generally upward, evaluate double integralS of
