I was just browsing through my textbook in the section on hyperbolic trig functions. It defines sinhx to be [tex]\frac{e^x-e^{-x}}{2}[/tex], which comes from breaking the function [tex]f(x)=e^x[/tex] into two functions, the other of which forms coshx.(adsbygoogle = window.adsbygoogle || []).push({});

Oddly enough, this is one of the only sections in the text that does not include a brief history of the topic at hand.

I came across one site that said that aLambertdiscovered (or created, I don't know which) the hyperbolic functions.

Does anyone know of any good sources where I could get the rundown on the history of these things.

I am just curious as to why someone would have wanted to break [tex]e^x[/tex] into parts in the first place.

I know that the hyperbolic functions will serve some purposes in integration, but I would assume that that was not their original intent.

Any insight would be appreciated,

Casey

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# Looking For a little History on the Hyperbolic Functions

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