Solution to Show that (p → q) → (r → s) and (p → r) → (q … - Sikademy
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Archangel Macsika

Show that (p → q) → (r → s) and (p → r) → (q → s) are not logically equivalent. The dual of a compound proposition that contains only the logical operators ∨, ∧, and ¬ is the compound proposition obtained by replacing each ∨ by ∧, each ∧ by ∨, each T by F, and each F by T. The dual of s is denoted by s ∗.

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Question ID: mtid-5-stid-8-sqid-874-qpid-759