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

Compute the following:

[itex] \int \frac{cosh(x)}{cosh^2(x) - 1}\,dx [/itex]

2. Relevant equations

[itex] \int cosh(x)\,dx = sinh(x) + C [/itex]

3. The attempt at a solution

I had no clue where to start, so I went to WolfRamAlpha, and it used substitution but it made [itex] u = tanh(\frac{x}{2}) [/itex] and I had no clue how I am supposed to know to do that.

Any advice on where to start is greatly appreciated.

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# Homework Help: Finding Indefinite Integral of a combination of hyperbolic functions

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