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OpenStudy (anonymous):
caculate the derivatives using by difination: f(x)= ln x
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OpenStudy (anonymous):
the derivative of lnx is (1/x)
OpenStudy (anonymous):
how?
OpenStudy (anonymous):
truth be told i really dont know...its just one of those diff. rules i was taught and was told to memorize. though if you really want to know why i guess you can watch this video for the proof. http://www.khanacademy.org/video/proofs-of-derivatives-of-ln-x--and-e-x?playlist=Calculus
OpenStudy (anonymous):
thanks I need to proof it.
OpenStudy (anonymous):
no problem :)
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