Question Use laws of logic (algebraic version) to show the following equivalences (clearly indicate
Question Use laws of logic (algebraic version) to show the following equivalences (clearly indicate which law you use in each step):
(a) ≡ (q → p).
(b) (p → (q → r)) ≡ (q → (p → r))
(c) ((p → r) V (q → r)) ≡ ((p ∧ q)→ r)