(1) (a) Repeat example 2.2.1 on x + y zw'. (b) Remove all parentheses from the result in part (a) of this problem. Example 2.2.1: Form the dual of the expression x + y z Solution: Left operand of the OR is x, right operand is y z. Hence, need parentheses around y.z. x + y z = x + (y z) Dual is formed by forming dual of OR, dual of left operand, dual of right operand. Dual of x + (y+z) x. (y +z) is