Mathematics, 15.07.2020 01:01 ayoismeisalex

Use De Morgan’s law for quantified statements and the laws of propositional logic toshow the following equivalences:.a) ¬ x(P (x) ¬Q(x)) x(¬P (x) Q(x))∀∧≡∃∨b) ¬ x(¬P (x) = Q(x)) x(¬P (x) ¬Q(x))∀⇒≡∃∧c) ¬ x(¬P (x) (Q(x) ¬R(x))) x(P (x) (¬Q(x) R(x)))

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Use De Morgan’s law for quantified statements and the laws of propositional logic toshow the followi...