For each numbered statement that is not a premise in each of the formal proofs that follow,
Question:
For each numbered statement that is not a premise in each of the formal proofs that follow, state the rule of inference that justifies it.
1. T ⋅ (U ꓦ V)
2. T ⊃ [U ⊃ (W ⋅ X)]
3. (T ⋅ V) ⊃ ~ (W ꓦ X)
∴ W ≡ X
4. (T ⋅ U) ⊃ (W ⋅ X)
5. (T ⋅ V) ⊃ (~ W ⋅ ~ X)
6. [(T ⋅ U) ⊃ (W ⋅ X)] ⋅
[(T ⋅ V) ⊃ (~ W ⋅ ~ X)]
7. (T ⋅ U) ꓦ (T ⋅ V)
8. (W ⋅ X) ꓦ (~ W ⋅ ~ X)
9. W ≡ X
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In the formal proof given the following rules of inference are used Modus Ponens MP If …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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