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Show that the given argument is invalid by giving values for the predicates P and Q over the domain {a, b}. (a) x (P(x) Q(x))
Show that the given argument is invalid by giving values for the predicates P and Q over the domain {a, b}.
(a)
x (P(x) Q(x)) x P(x) x Q(x)
(b)
x (P(x) Q(x)) x Q(x) x P(x)
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