Question1: (a) Show using the proof system that the sentence ¬(Ca ∧ ¬Ca) is a tautology. (b)Show using the proof system
Posted: Wed Jul 06, 2022 11:49 am
Question1:
(a) Show using the proof system that the sentence ¬(Ca ∧ ¬Ca) isa tautology.
(b)Show using the proof system that the sentences (Qa ∧ Ca) and¬(¬Qa ∨ ¬Ca) are tautologically equivalent.
(a) Show using the proof system that the sentence ¬(Ca ∧ ¬Ca) isa tautology.
(b)Show using the proof system that the sentences (Qa ∧ Ca) and¬(¬Qa ∨ ¬Ca) are tautologically equivalent.