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Determine Whether the Given Proposition Is a Logical Truth of PL

Question 6

Essay

determine whether the given proposition is a logical truth of PL or not. If it is a logical truth, provide a proof. If it is not a logical truth, provide a false valuation.
-[(P • Q) ≡ (R ∨ \lor S)] ⊃ [(P • ∼R) ⊃ S]

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