Determine Whether the Given Proposition Is a Logical Truth of PL

question 69

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 $\lor$ Q) ⊃ (R • ∼S)] ⊃ [(P $\lor$ R) ⊃ S]

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Definitions:

Exercise

Physical activity that is planned, structured, and repetitive for the purpose of conditioning the body, improving health, and maintaining fitness.

Retirement Facilities

Specialized housing designed to meet the needs of the elderly, often providing medical care, social activities, and support services.

Quad-Base Cane

A walking aid featuring a four-footed base providing increased stability for users.