1. The problem statement, all variables and given/known data Use only DeMorgan's relationships and Involution to find the complements of the following functions: a.) f(A,B,C,D) = [A+(BCD)'][(AD)'+B(C'+A)] 2. Relevant equations Demorgans (x1 + x2 + ... + xn)' = x1'x2'...xn' Involution (x')' = x 3. The attempt at a solution [[A+(BCD)'][(AD)'+B(C'+A)]]' to find the compliment, then using demorgans [A+(BCD)']' + [(AD)'+B(C'+A)]' [A'(BCD)] + (AD)[B(C'+A)]' A'BCD + (AD)[B' + (C'+A)'] A'BCD + (AD)(B' + CA') from here I don't know where to go, i would think the right side of the equation could turn to ADB' + ADCA' but i'm not sure, if it can ADCA' would just be 0 since AA' = 0. Don't know if I can do that though, just looking for some input and hopefully I didn't make a mistake towards the begining.