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

Question 97

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)∼Ix ⊃ (∀x)(Jx ∨ \lor Kx)
2. ∼(∀x)Ix • ∼Jb / Kb

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