Question: Use the basic natural deduction rules for propositional logic to prove the validity of the following sequents: (i) (pq)(pr)p(qr) (ii) (pr)(qr)((pq)r) Question 1.3 Use the

Use the basic natural deduction rules for propositional logic to prove

Use the basic natural deduction rules for propositional logic to prove the validity of the following sequents: (i) (pq)(pr)p(qr) (ii) (pr)(qr)((pq)r) Question 1.3 Use the HORN algorithm to determine whether the following Horn formula is satisfiable or not. Show all the steps. (pqr)(Tp)(trs)(pTq)(pst)(rs)

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