Simplify the following switching functions. The simplified result should be in SOP format. Show all work the way I show in class. Don't take short cuts. Note: The book does not make this limitation. a) f(A.X,Z) = X(X + Z) + A + AZ | b) f(X,Y,Z) = (x+xz)(x+) c) f(x, y, z) = xy(z+xy) + yz