Question

помогите решить срочно

Answer 1

1) ¬(¬A ∨ ¬B) ∧ A = A ∧ B ∧ A = A ∧ B

2) ¬(¬A ∨ ¬B) ∨ (A ∧ (¬B ∧ 1)) = (A ∧ B) ∨ (A ∧ ¬B) = A

3) ¬(A ∧ B) ∨ A ∨ B = ¬A ∨ ¬B ∨ A ∨ B = 1