Let p(x), q(x) be defined as in Exercise 1. Let r(x) be the open statement "x > 0." Once again the universe comprises all integers.
(a) Determine the truth values of the following statements.
(i) p(3) ∨ [q(3) ∨ ¬r(3)]
(ii) p(2) → [q(2) → r(2)]
(iii) [p(2) ∧ q (2)] → r(2)
(iv) p(0) → [¬(q) ↔ r(1)]
(b) Determine all values of x for which
[p(x) ∧ q(x)] ∧ r(x) results in a true statement.