For each of the following, either construct a formal proof of validity or prove invalidity by means
Question:
For each of the following, either construct a formal proof of validity or prove invalidity by means of the STTT.
(P1): (E ⊃ F) ⋅ (G ⊃ H)
∴ (E ꓦ G) ⊃ (F ⋅ H)
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Related Book For 
Introduction To Logic
ISBN: 9781138500860
15th Edition
Authors: Irving M. Copi, Carl Cohen, Victor Rodych
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