- #1

- 1

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**Homework Statement**

I need to find the integral of 1/(x

^{2}- 1) dx

**The attempt at a solution**

Double checking on an online integrator, it gave me an answer of

1/2 [log(x-1) - log(x+1)]

I would have expected

log(x

^{2}-1)/2

Does anyone know why it's the first one?