1. Let p, q, r, and s be propositional variables. Which of the following expressions would...

1. Let p, q, r, and s be propositional variables. Which of the following expressions would not be formulas in conjunctive normal form? Why?

(a) p ∨ p ∨ p

(b) p ∧q ∧ r

(c) (p ∧ q) ∨ (p ∧ r)

(d) ¬p ∧¬p ∧¬p

(e) p ∧ q→ p

(f) ¬p ∨¬p ∨¬p

(g) s

(h) ¬(p ∨ q ∨ r)

(i) ¬p ∨ q ∨ r

(j) (p ∨¬q) ∧ (¬q ∨r) ∧ (¬p ∨s) ∧ (¬p ∨¬q ∨¬r ∨¬s)

Expert Solution

venereology answered 4 months ago

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