Question: [U (T S)] [(T U) (S U)] Use truth tables to determine whether the following symbolized statements are

[U ∙­ (T ∨ S)] ≡ [(­T ∨ ­∼ U) ∙­ (­S ∨ ­U)]

Use truth tables to determine whether the following symbolized statements are tautologous, self-contradictory, or contingent.

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