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May 26, 2015

Homework Help: Calculus

Posted by Abigail on Sunday, February 27, 2011 at 9:23pm.

Let f(x)= (1/x). Use the limit definition of derivative to find f'(x).

My professor's answer is: -1/x
but I keep getting: -1/x^2

what do I have to do to get that answer?

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