3. Simplify the following functions containing Don't cares and implement using NAND gates only a. FAB,C,D) = m (2,9,10,12,13) + d(1,5,14) b. FAB,C,D)-m (1,3,6,7)+ d(4,9,11) c. FAB,CD,E)-m (3,11,12,19,23,29) + d(5,7,13,27,28) Determine which of the following functions are equivalent: fl(A, B,C,D) AC + BD + ABD (A. B. C. D) ABD + AB + f,(A. B. C. D)-BD+ ABD+ACD+ ABC f(A, B, C, D) AC +ABCD+ABD+ BCD 5. Find the POS form for the following functions and implement parts b, d, e, g using NOR gates only (D stands for Don't Care) a. b. c. d. e. FABC)-(0,1,4,5,6) FAB,C,D)-(4,7,9,11,12)D(0,1,2,3) FAB,C,D)-(0,1,3,4,6,7) FABCD-(0,1,5,7,8,10,11,15) FABCD) = M(3,4,10,13,15)D(6,7,14) F(ABCD) F(ABCDE)-(3,4,6, 13,15,16,19,24,29,31) FAB.C,D,E)-(0,5,6,9,21,28,31)D(2, 12,13,14,15,25,26) M 1,3,4,5,6,9,1 1,12, 13) g. h