Yahoo! Canada Answers - Solving for integral of cos2x = …

Apr 17, 2010 · Best Answer: ∫ cos(2x) dx Use u-substitution: u = 2x du = 2 dx (1/2)du = dx Rewrite with u's: (1/2) ∫ cos(u) du Integrate: (1/2)sin(u) + C Plug back in ...

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