Indicate whether two functions are equal. See image below.

PROBLEM 1 Indicate whether the two functions are equal. If the two functions are not equal, then give an element of the domain on which the two functions have different values. (a) f : Z - Z, where f(x) =x2. g : Z - Z, where g(x) = |x/2. (b) f : Z xZ -> Z, where f(x, y) = lx + yl. g : Z xZ + Z, where g(x, y) = (x| + lyl