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

evaluate [tex]\int \frac{1}{x^2+1} dx[/tex]

2. Relevant equations

3. The attempt at a solution

This cant be [tex]\frac{\ln x^2+1}{2x}[/tex] , my first thought on this .

Then , i tried partial fraction , it didn't work either .

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# Homework Help: Integration problem

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