TITLE: How to integrate $\sec^3 x \, dx$?
QUESTION [6 upvotes]: Possible Duplicate:
Indefinite integral of secant cubed 

How to integrate $\sec^3 x \, dx$?
Can someone please give a method, I tried separating $\sec^3 x$ as $\sec x(\sec^2 x)$ then applying by-parts method but it didn't yield anything useful

REPLY [6 votes]: There's a whole Wikipedia article about just this integral: Integral of secant cubed.
You're mistaken to think that integration by parts doesn't help.