Simplify as sum-of-products and product-of-sums expression for each function:

(Note the dont-care notation here is different than in the textbook.)

(a) f(A, B, C, D) = M(0, 2, 10, 11, 12, 14, 15) D(5, 7) (b) f(w, x, y, z) = m(0, 3, 5, 7, 8, 9, 10, 12, 13) + d(1, 6, 11, 14)