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Fitch Style Proofing (Natural Deduction):

Help me complete these two fitch style proofs with these 2 premises each and a conclusion:

(1)

1 2 (P-Q) |(Q---P) Premise Premise Conclusion: ~P

(2)

Premise 1 ((P&~R)—Q) 2 LIQVR) Premise Conclusion: -P

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Answer #1

Þ> 0 -0 ļ bremise os svp - © on Taking Hypothetical syllogism O and © § → vp - As an equivalence form of o me get wp v~p , By((p $ ~R) -→ 5) -0 remuse As an equivalence form of 0, he ~(P$ ~R) va matemal Domplication By De morgans law so ☺ , (up VR)

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