discrete math help when are two logical expressions equivale

discrete math help.

when are two logical expressions equivalent?

Solution

Answer :

Two logical expressions A and B are logically equivalent if, and only if, their resulting forms are logically equivalent when identical statement variables are used to represent component statements.

or

Two logical expressions A and B are logically equivalent provided if they have same truth values for all possible truth values of component variables.

One method for determining whether logical expressions are equivalent is to construct a truth table that compares their truth values for all possible truth values of the component variables occuring in it.