Problem 10. Let $ be the unit sphere with outward normal. Consider the surface integral (2(32 -72+ 1)ity(22 - 12 + 1)j + 2(12 -y? + 1)k) . ds a. Compute the surface integral by using the definition of surface integrals. (Hint: the outward normal at the point (@, y, 2) on the sphere is a multiple of (x, y, 2).) b. Compute the surface integral by evaluating the triple integral of an appropriate function