Essay
1. (∀x)[(Px • Qx) ⊃ Rf(x)]
2. (∀x)[Rx ⊃ (∃y)Pxy]
3. ∼(∀x)(Px ⊃ ∼Qx) / (∃x)(∃y)Pxy
Correct Answer:

Verified
Correct Answer:
Verified
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