Use indirect proof to prove that the following statements are tautologies. (A B) (~ A

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Use indirect proof to prove that the following statements are tautologies.


(A ⊃ B) ꓦ (~ A ⊃ C)

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Introduction To Logic

ISBN: 9781138500860

15th Edition

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

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