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Unread 17-01-2005, 10:38
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'Luzer'
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Re: New math functions?

Quote:
Originally Posted by nehalita
Quick question: I looked up the difference between cos and cosh and it says that cosh was the hyperbolic cosine. What is a hyperbolic cosine and when would it be helpful to use it? (wow i think I've ended every post I've done here with a confused face...)
The hyperbolic cosine cosh(x) = (e^x + e^-x)/2

It is very useful when evaluating certain integrals, but not really used outside of advanced calculus. A good description is here.
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