3. Demonstrate that the two expressions included below are equivalent by using the logical equivalences as they were discussed in class. You will not receive marks for a truth table but you may use one to verify your answer if you wish. You must state the logical equivalence used with each step, but because of space restrictions you may omit any applications of the commutative or associative equivalences. You may not use anything other than the logical equivalences that were presented in class. [6 marks] (p (p V r)) ((p (p v r)) ^ (p v (p vr)) V false))