1. J ⊃ (K $ \lor $ L)
2. J ≡ ∼K
3. (∼L $ \lor $ M) • (∼L $ \lor $ N)
-Which of the following propositions is derivable from the given premises using any of the twenty-five rules of PL and either the direct or conditional methods of proof?
A) J ⊃ K
B) J ⊃ ∼L
C) J ⊃ (K • L)
D) J ⊃ (M • ∼L)
E) J ⊃ (M • N)

Question

Quizplus · Accepted Answer

The Answer of 1. J ⊃ (K $ \lor $ L)
2. J ≡ ∼K
3. (∼L $ \lor $ M) • (∼L $ \lor $ N)
-Which of the following propositions is derivable from the given premises using any of the twenty-five rules of PL and either the direct or conditional methods of proof?
A) J ⊃ K
B) J ⊃ ∼L
C) J ⊃ (K • L)
D) J ⊃ (M • ∼L)
E) J ⊃ (M • N)

1 J ⊃ (K ∨ \lor ∨ L) 2 J ≡ ∼K 3

1 J ⊃ (K $\lor$ L)
2 J ≡ ∼K
3