Question: Construct the truth table for each of the following propositional expressions. Also point out if any of these expressions is a tautology: (a) (a

Construct the truth table for each of the following propositional expressions. Also point out if any of these expressions is a tautology:

(a) (a ∧

b) ⇒ a

(b) (a ∨

b) ⇒ a

(c) a ⇒ (a ∧ b)

(d) a ⇒ (a ∨ b)

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