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September 30, 2014

September 30, 2014

Posted by **Laura** on Sunday, February 15, 2009 at 5:17pm.

- math/ cal -
**drwls**, Sunday, February 15, 2009 at 7:07pmThere is a solution given here that uses complex numbers but gives a simple real answer which is correct:

http://answers.yahoo.com/question/index?qid=20070116202856AA7DM5R

You might be able to get the same answer using integration by parts

- math/ cal -
**drwls**, Sunday, February 15, 2009 at 7:14pmThe answer is

(x/2) - (1/4)sin(2x)

I don't see any easier way to get it than the "Euler" proof in the link I gave you

- math/ cal -
**Laura**, Sunday, February 15, 2009 at 7:15pmthank you for your answer, but this example problem is not the same as mine. the example problem is (sin (x))^2, in other words the whole quantity is squared. mine is just sin of x^2. any suggestions here?

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