The dual of a Boolean function f(x1, x2, … , xn, +, ∙ , ′ ), written as FD, is the same expression as that of F with + and . swapped. F is said to be self-dual if F = FD. The number of self-dual functions with n Boolean variables is

The dual of a Boolean function f(x1, x2, … , xn, +, ∙ , ′ ), wri

1.	The dual of a Boolean function f(x1, x2, … , xn, +, ∙ , ′ ), written as FD, is the same expression as that of F with + and . swapped. F is said to be self-dual if F = FD. The number of self-dual functions with n Boolean variables is
A.	2n
B.	2n-1
C.	22n
D.	22n-1
Answer» E.

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The dual of a Boolean function f(x1, x2, … , xn, +, ∙ , ′ ), written as FD, is the same expression as that of F with + and . swapped. F is said to be self-dual if F = FD. The number of self-dual functions with n Boolean variables is

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