Question: 1. Prove in the Hilbert deductive system the expression given : {A} (B A) B The first two steps of the proof, as well as

1. Prove in the Hilbert deductive system the expression given :

{A} (B A) B

The first two steps of the proof, as well as the inference rule to be used in the third step, are given. You are required to complete the third step and give the subsequent steps of the proof.

{A, B A} A	Assumption
{A, B A} B A	Assumption
{	2, contrapositive rule (2)

Please do not copy and paste what is already on Chegg which is wrong

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