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OpenStudy (anonymous):
find dy/dx of (e^x-e^-x)/(e^x+e^-x)
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OpenStudy (anonymous):
(e^x-e^-x)/(e^x+e^-x) = tanh(x) so d/dx tanh(x) = sech^2(x)
OpenStudy (anonymous):
http://www.wolframalpha.com/input/?i=derivative+%28e^x-e^%28-x%29%29%2F%28e^x%2Be^%28-x%29%29
OpenStudy (anonymous):
btw, these are hyperbola trig, not trig itself
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