(a) p q = ¬pVq (b) p⇒ g =¬g —¬p)

(a).

In this problem to show that $p\to q\equiv \neg pvq$ 

Show draw the truth table as follows

from this table, we can say that columns p$\to$q and $\neg$p ∨ q are identical.
∴ $p\to q \equiv \neg p\vee q$