Exercise 1. Establish the following logical equivalencies where the domain of P(x) is non-empty and Adoes...

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Advance Math

Exercise 1. Establish the following logical equivalencies wherethe domain of P(x) is non-empty and Adoes not depend upon x:
i) ?x(A ? P(x)) ? A ? ?xP(x).
ii) ?x(P(x) ? A) ? ?xP(x) ? A.

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