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1)(not use truth table )Use the laws of propositional logic to prove that the following compound propositions are tautologies. a- ( ( )) b. ()()()

1)(not use truth table )Use the laws of propositional logic to prove that the following compound propositions are tautologies.

a- ( ( )) b. ()()()

2)(not use truth table ) Use the laws of propositional logic to prove that the following compound propositions are logically equivalent.

a. ((()))and()

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