May 9th, 2014, 09:35 PM  #1 
Senior Member Joined: Nov 2013 Posts: 434 Thanks: 8  integrate secxdx
integrate secxdx

May 10th, 2014, 02:11 AM  #2 
Senior Member Joined: Apr 2014 From: Greater London, England, UK Posts: 320 Thanks: 156 Math Focus: Abstract algebra 
Multiply and divide by $\tan x+\sec x$ to make the integrand of the form $\displaystyle \frac{f'(x)}{f(x)}$.
Last edited by Olinguito; May 10th, 2014 at 02:14 AM. 

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