(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

[tex]\int[/tex]dx/[tex]\sqrt{}x^2 -1[/tex]

I actually know that the answer is arccosh(x) but I want to prove it in form of Ln(x+[tex]\sqrt{}x^2 -1[/tex])

2. Relevant equations

3. The attempt at a solution

I have tried many times such as u=x^{2}-1 and u=x^{2}

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# Homework Help: Arccosh(x) integral

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