Practice 4 1. Using DeMorgan's theorem, express the function F AB'C+A'C'+AB (a) With only OR and complement operations (b) With only AND and complement operations (c) With only NAND and complement operations 2. Find the complement of the following expressions (a) (V'W+X)Y +Z (b) WX(Y Z+YZ') + W'X'(Y'+Z)(Y+Z') 3. Obtain truth table of the following functions, and express each function in