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Derive the Conclusions of Each of the Following Arguments Using ∨ \lor

Question 119

Essay

derive the conclusions of each of the following arguments using the rules of inference for M. Do not use conditional or indirect proof.
-1. (∀x)(Hx ⊃ ∼Jx)
2. (∀x)(Ix ⊃ Jx)
3. Ha • Ib / ∼(Ia ∨ \lor Hb)

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