pa help naman dito guys
1. [ ( A ∧ ~ B ) ↑ ~ A ] ∧ [ ( ~ A ∧ ~ B) ]
2. [ ( A ∧ ~ B ) ↑ ~ A ] ↓ [ ( ~ A ∧ ~ B) ]
3. Prove that the statement [ ( A ∧ B ) ∨ ~ B ] → [ ( ~ A ⇔ ~ B ) ↓ ( B ⨁ ~ B ) ] ↑ A is a
tautology.
4. Prove that [ ( A ∧ ~ B ) ↑ ~ A ] ↓ [ ( ~ A ∧ ~ B) ] is a contradiction.
5. Prove that (A ∧ ~ B) ∨ (~ A ∧ B) is contingency.
6. Construct a truth table for ~ ( A ∨ B )
7. Construct a truth table for ( A → B ) ∨ ( B → C )
8. Prove that ~ ( A ∨ B ) and [ ( ~ A ) ∧ ( ~ B ) ] propositionally equivalent.
