Find a minimal-sum-of-products representation for
(a) f(w, x, y) = ∑, m(1, 2, 5, 6)
(b) f(w, x, y) = Π[ M(0, 1,4, 5)
(c) f(w, x, y, z) = ∑ m(0, 2, 5, 7, 8, 10, 13, 15)
(d) f(w, x, y, z) = ∑ m{5, 6, 8, 11, 12, 13, 14, 15)
(e) f(w, x, y, z) = ∑ m(7, 9, 10, 11, 14, 15)
(f) f(v, w, x, y, z) =
∑ m( 1, 2, 3, 4, 10, 17, 18, 19, 22, 23, 27, 28, 30, 31)