For each of the following arguments, it is possible to provide a formal proof of validity by

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For each of the following arguments, it is possible to provide a formal proof of validity by validly inferring just three statements. Writing these out, carefully and accurately, will strengthen your command of the rules of inference, a needed preparation for the construction of proofs that are more extended and more complex.

(P1): (P ⊃ Q) ⋅ (Q ⊃ P)
(P2): R ⊃ S
(P3): P ꓦ R
∴ Q ⊃ S

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Introduction To Logic

ISBN: 9781138500860

15th Edition

Authors: Irving M. Copi, Carl Cohen, Victor Rodych

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