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4 Inference proofs Use laws of equivalence and inference rules to show how you can derive...

4 Inference proofs

Use laws of equivalence and inference rules to show how you can derive the conclusions from the given premises. Be sure to cite the rule used at each line and the line numbers of the hypotheses used for each rule.

a) Givens:

1 a∧b
2 c → ¬a

3 c∨d

Conclusion: d

b) Givens
1 p→(q∧r)

2 ¬r

Conclusion ¬p

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