Let A = {1, 2, 3, 4} and B = {1, 2, 3, 4, 5}. Give an example of a. A function f: A  B that is not one-to-one but where f(1) = f(2) b. A one-to-one function g: A  B, where g(1) = 3 = g(2) Let C = {a, b, c, d} and D = {a, b, c}. Give an example of 

c. A function h: C  D that is not onto but where h(a) = h(b) d.A function f: C  D that is onto but where g(a) = g(b)