4. Express the complement of the following function in sum of minterms: a) F (A,B,C,D) = (0,2,6,11,13,14) b) F(x,y,z) = (0,3,6,7) 5. Simplify the following Boolean function , using three- variable maps: a) F(x,y,z) = (0,2,6,7) b) F(A,B,C ) = (0,2,3,4,6) c) F(a,b,c) = (0,1,2,3,7) d) F(x,y,z) = (3,5,6,7)