November 19th, 2015, 12:38 PM  #1 
Newbie Joined: Nov 2015 From: Norway Posts: 12 Thanks: 0  Hard
How do you derive this?

November 19th, 2015, 01:09 PM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 2,883 Thanks: 1503 
derivative? $(\ln{u})' = \dfrac{u'}{u}$


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