Can someone explain this in a step by step direction pls ?
Consider the following propositional formulas: a) p vee not p b) p wedge not p c) p vee q d) p rightarrow (q rightarrow p) e) (p wedge q wedge r) vee (not p vee not q vee not r) f) (p wedge q) vee (p wedge not q) vee (not p wedge q) Which of these formulas are satsfiable but not tautologies? Which of these formulas are tautologies? Which of these formulas are unsatisfiable (contradictions)? Suppose I is a valuation that makes p and q true and r false. Which of the following formulas are satisfied by I? a) p vee q vee r b) p wedge q wedge r c) p d) r e) not p f) not r