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Which of the following two formulas are tautologies of the classical quan- tifier calculus: (a) Vr(0(x) = V()) = (Vro(c) = Vry(x)) () (Vx) (x))
Which of the following two formulas are tautologies of the classical quan- tifier calculus: (a) Vr(0(x) = V()) = (Vro(c) = Vry(x)) () (Vx) (x)) Vx() } (x) (0) (0)OTA = ((1TAF TOTA) (9) neither (a) nor (b) both (a) and (b) (b) but not (a) (a) but not (b)
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