Each of the following exercises presents a flawless formal proof of validity for the indicated argument. For
Question:
Each of the following exercises presents a flawless formal proof of validity for the indicated argument. For each proof, state the justification for each inferred statement (i.e., each statement that is not a premise).
1. W ⊃ X
2. (W ⊃ Y) ⊃ (Z ꓦ X)
3. (W ⋅ X) ⊃ Y
4. ~ Z
∴ X
5. W ⊃ (W ⋅ X)
6. W ⊃ Y
7. Z ꓦ X
8. X
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Proof 1 W X Premise 2 W Y Z X Premise 3 W X Y Premise 4 Z Premise 5 W W X Premise 6 W Y Mod...View the full answer
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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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