Answer
a) YES
b) NO
c) NO
d) YES
Work Step by Step
Defining of these functions are self-dual?
a) F(x, y) = x which is Self-Dual
b) F(x, y) = xy + x y which is not Self-Dual
c) F(x, y) = x + y which is Not Self-Dual
d) F(x, y) = xy + xy which is self - Dual