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

power series expansion of:

((cosh x)/(sinh x)) - (1/x)

2. Relevant equations

cosh x = (1/2)(e^{x}+ e^{-x})

sinh x = (1/2)(e^{x}- e^{-x})

3. The attempt at a solution

what i have so far:

I simplified the first part of the eq to read :

e^{2x}-1

e^{2x}-1

now I am stuck. please help

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# Homework Help: Power Series expansion of hyperbolic functions

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