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OpenStudy (anonymous):
what is the meaning of "ch" in this integral?
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OpenStudy (anonymous):
\[\int\limits_{}^{} \frac{ dx }{ chx }\]
OpenStudy (phi):
I don't think I have seen this before. are c and h constants ? a function ?
OpenStudy (anonymous):
my prof mentioned something like "hyperbolic something something"...(hard to grasp native polish speakers sometimes)...did i give you a clue? cause i don't know what's going on.
OpenStudy (phi):
ok, then maybe they mean hyperbolic cosine we would say cosh http://en.wikipedia.org/wiki/Hyperbolic_cosine
OpenStudy (anonymous):
yes! that's it!
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OpenStudy (anonymous):
thank you @phi
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