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April 21, 2014

April 21, 2014

Posted by **Daniel** on Thursday, February 21, 2013 at 12:53am.

- calculus -
**Steve**, Thursday, February 21, 2013 at 4:26ambecause sin2x = 2sinx cosx

and integral cos(u) du = sin(u)

and d(2x) = 2 dx

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