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. (D ⋅ E) ⊃ F
2. (D ⊃ F) ⊃ G
∴ E ⊃ G
3. (E ⋅ D) ⊃ F
4. E ⊃ (D ⊃ F)
5. E ⊃ G
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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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