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OpenStudy (paxpolaris):
How do I integrate cos^2 ? \[\large\int_0^{2\pi} \cos^2u\ du\]
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OpenStudy (helder_edwin):
use this identity \[ \large \cos^2u=\frac{1+\cos(2u)}{2} \]
OpenStudy (paxpolaris):
d'oh ... Thanks ... u r awesome
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