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## Homework Statement

Compute the following antiderivative [tex] \int \frac {(2x+1)}{ (x^2+1)} d \ x[/tex]

## Homework Equations

## The Attempt at a Solution

I tried a method using using substitution of u = x^2+1, but i think this is approaching the question in the complete wrong way. I think maybe some kind of trigonometric function comes into it but i'm not sure which. Thanks in advance for any assistance