Complete this formal proof of Ex(P(x)v~P(x)) from the empty set. NOTE: similar to the rule above...

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Complete this formal proof of Ex(P(x)v~P(x)) from the empty set.NOTE: similar to the rule above when instantiating quantifiers, ifyou need a random name, always start at the beginning of thealphabet. That is, use a first; only use b if necessary; etc.

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Some proofs of definitions by contradiction and contrapositive but not direct proofs the existence of infinite primes for example I think most    See Answer
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