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## Homework Statement

[tex]\int\left(1+x^{2}\right)^{\frac{3}{2}}dx[/tex]

## Homework Equations

The hyperbolic functions.

## The Attempt at a Solution

We've been going over hyperbolic substitutions in class so I assume I'm meant to use one of those, but I'm just not sure how to choose which one. Any help greatly appreciated.