Question: 2. (This exercise is a variation of Exercise 4.5 in Chapter 4 of the textbook) Consider the set of formulas (a) Transform S into a

2. (This exercise is a variation of Exercise 4.5 in Chapter

2. (This exercise is a variation of Exercise 4.5 in Chapter 4 of the textbook) Consider the set of formulas (a) Transform S into a set of formulas in CNF, S (b) Transform S' into a set of formulas in clausal form, S" (c) Prove using resolution that S" is unsatisfiable. 3. (Exercise 4.4 in Chapter 4 of the textbook) Given the set of clauses (pr, pr, qr, rl, construct two refutations (i.e. demonstrate using the resolution procedure that the set of clauses is unsatisfiable): (a) one by resolving the literals in the order (p, q, rh (b) and the other in the order (r, q, pl 2. (This exercise is a variation of Exercise 4.5 in Chapter 4 of the textbook) Consider the set of formulas (a) Transform S into a set of formulas in CNF, S (b) Transform S' into a set of formulas in clausal form, S" (c) Prove using resolution that S" is unsatisfiable. 3. (Exercise 4.4 in Chapter 4 of the textbook) Given the set of clauses (pr, pr, qr, rl, construct two refutations (i.e. demonstrate using the resolution procedure that the set of clauses is unsatisfiable): (a) one by resolving the literals in the order (p, q, rh (b) and the other in the order (r, q, pl

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