+ 1. Apply DeMorgan's theorem to each of the following a) (AB'(C+D'))' b) (AB(CD + EF))' c) (A + B'+C+D')' + (ABCD')' d) ((A' + B + C + D)'(AB'C'D)')' e) ((AB)'(CD + E'F)((AB)' + (CD)'))' 2. Write the Boolean expression for each of the following logic circuits X X (a) (b) A D B B (c) (d) 3. Draw the logic circuit for each of the following expressions: (a) X = AB' + A'B (b)X = AB + A'B' + A'BC (c)X = A'B(C+D') (d) X = A + B[C+D(B + C')]