Miscellaneous Exercise 1 · Q177
Q.Using rules in logic, prove the following:
Maharashtra MsbshseTextbookSubjectiveImportance★★★★★
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Start your 14-day free trial to unlock the full solution →p ↔ q ≡ (p → q) ∧ (q → p) ... [Biconditional Law]
≡ (~p ∨ q) ∧ (~q ∨ p) ... [Conditional Law: a→b ≡ ~a∨b, applied to both conjuncts]
≡ ~(p ∧ ~q) ∧ ~(q ∧ ~p) ... [De Morgan's Law: ~p∨q ≡ ~(p∧~q); ~q∨p ≡ ~(q∧~p)] …
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