PLSS NEED ANSWER URGENTLY
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PLSS NEED ANSWER URGENTLY

[From: ] [author: ] [Date: 11-09-04] [Hit: ]
......
Integrate cosine squared x
Thanks :)

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Change to double angle.
cos²x = ½cos(2x) + ½
So, ∫ cos²x dx
= ∫ ½cos(2x) + ½ dx
= (¼)sin(2x) + (½)x + c.

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ferozeso integrated squared cosine x instead of cosine squared x
I can tell you that one cannot integrate cos(x²) analytically,
only numerically with Newton-Cotes formula
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