DeMorgan’s Law (example)
Express the complement f’(w,x,y,z) of the following
expression in a simplified form.
f(w,x,y,z) = wx(y’z + yz’)
f’(w,x,y,z) = w’ + x’ + (y’z +yz’)’
= w’ + x’ + (y + z’)(y’ + z)
= w’ + x’ + yy’ + yz + z’y’ + z’z
= w’ + x’ + 0 + yz + z’y’ + 0