1. Where are each of following functions discontinuous? a) f (a) = 22 - 2x - 3 x+1 X = - 1 x2 - 2x - 3 hm ( x + 1 ) ( x - 3 ) b) f (20 ) = if x * -1. In X - 3 a +1 2, x 7 - 1 if x = -1. = - 1- 3 = - 4 - 1 c) f(ac) = if x * 0. him if x = 0. DNE 0 Next