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December 21, 2014

December 21, 2014

Posted by **mary** on Wednesday, November 19, 2008 at 2:47pm.

am i using integration by parts?

- anti derivative -
**drwls**, Wednesday, November 19, 2008 at 3:39pmNo. Use substitution.

Let u = cos x. Then du = -sin x dx

The integral becomes that of

u^2 du, which is u^3/3

After substituting back, that becomes (cos^3 x)/3

- anti derivative -
**Anonymous**, Monday, January 23, 2012 at 6:35pmhi

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