Question: 7. Use the theorems in Table 5.8 to determine if the following are tautologies. a. [(p q) ~r] q ~r b. {[(p
7. Use the theorems in Table 5.8 to determine if the following are tautologies.
a. [(p ˄ q) ˅ ~r] ⇒ q ˅~r
b. {[(p ˅~r) ⇔ ~q] ˄ ~q} ⇒ (~p ˄ r)
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