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  • Brainly User
2015-09-09T12:17:47+08:00

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Solve by Substitution:
The answer is:
-cos (2x)  + C
     2

Always check the table of integrals for integral identities. 
(The symbols here are limited, so I solved by long hand. Please see attached solution. It's the best I can do :-) )
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