October 4, 2015

Homework Help: math

Posted by terra on Monday, September 26, 2011 at 3:15pm.

find derivative using limit definition:

f(x) = x - sqrt(x)

so f'(x) = lim
h->0 [f(x+h) - f(x)]/h

but I keep trying to solve by multiplying by the conjugate but I can't figure it out..there's nothing that can be cancelled or anything and I can't get the derivative

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