What is dual of A+A'B=A+B

Question

What is the dual of A+A'B=A+B

Comments

AB

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In dual ... leave the operand as it is and just change the operator

and in complement ,  change the operand as well as operator

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If the expression contains 0 and 1 they do get complemented.. but this is not applicable to variables

Answer 1

dual of (A+A'B) =>  A.(A'+B)=>  AA'+A.B=>  A.B (as AA' = 0)

dual of(A+B) => A.B

so dual of (A+A'B=A+B) => A.B = A.B

Answer 2

(A+A').(A+B)=A+B

dual of A+B=A.B

Answer 3

The dual of a Boolean expression is obtained by:

• Interchanging boolean sum and boolean product (interchange $+, .$)
• Interchanging the $0’s,1’s$
• keep the variable as it is.

So the dual of the given expression is:

$A+\bar AB=A+B$

$A.(\bar A+B)=A.B$

$A.B=A.B$ is the dual of the given boolean expression.