Date: Dec 26, 2012 4:02 AM
Author: ungeheuer
Subject: derivatives, limts, prooves

Please, when we proove f'ln(x) = 1/x, 
how do we get that:

lim ln((1/x)(1+u)^(1/u) = 1/x ln lim(1+u)^(1/u)  ???

many thanks!