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Decide each sentence is valid (necessarily true). Justify your answer. Decide each sentence is valid (necessarily true). (Exists x x = x) rightarrow (ForAll y

Decide each sentence is valid (necessarily true). Justify your answer.image text in transcribed

Decide each sentence is valid (necessarily true). (Exists x x = x) rightarrow (ForAll y Exists z y = z) ForAll x Smart(x) vee (x = x)

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