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

Question 21

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 • (Ix ∨ \lor Jx)]
2. (∀x)(Kx ⊃ ∼Ix)
3. (∀x)(Hx ⊃ Kx) / (∃x)Jx

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