Given the following premises:
1) F ⊃ J
2) A ⊃ (F • J)
3) A • (Q ∨ N)
A) J ⊃ F 1, Com
B) A • (N ∨ Q) 3, Com
C) A ⊃ J 1, 2, HS
D) (A ⊃ F) • (A ⊃ J) 2, Dist
E) (A • Q) ∨ N 3, Assoc
Correct Answer:
Verified
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1)∼D ∨ ∼T
2)D ∨
Q24: Use natural deduction to prove the following
Q25: Use conditional proof:
1.S ⊃ (B ⊃ T)
2.N
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1)∼∼N
2)K ⊃ ∼N
3)∼N ∨
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1)(S ⊃ R) ⊃
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1)∼T ⊃ E
2)∼K ⊃
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1)∼R ∨ ∼R
2)R ∨
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1)(C • ∼F) ⊃
Q32: Use indirect proof:
1.(P ∨ F) ⊃ (A
Q33: Given the following premises:
1)K ∨ ∼H
2)(K ∨
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