(a) calculate ffs f fn ds for the function in problem ii-14(a) over the surface of a cube of side s whose center is at (xo» vo, zo) and whose faces are parallel to the coordinate planes. (b) divide the above result by the volume of the cube and cal- culate the nimit of the quotient as s -»0. compare your result with the divergence found in problem ii-14(a) (c) repeat parts (a) and (b) for the function of problem ii-14(b) and (c) (a) ir jykz? . (b) iyzxz+ kry (c) ie je + ke"'