Integral of cos^6x dx Ive tried breaking it apart different powers but I can't figure out the correct combination.
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Originally Posted by ff4930 Integral of cos^6x dx Ive tried breaking it apart different powers but I can't figure out the correct combination. try integration by parts
This problem said to solve it using trig. breaking it into cos^4x and cos^2x dont seem to help =(1-sin^2x)^2 cos^2x
Re:
Last edited by qbkr21; Oct 9th 2007 at 06:07 PM.
Problem is cos^6x not sin^6x
Originally Posted by ff4930 Integral of cos^6x dx As Jhevon already told ya, integrate by parts. -- But, it doesn't make much sense to integrate $\displaystyle \cos^6x,$ so I'd prefer to compute $\displaystyle \int\cos^nx\,dx$ which contains a lot of sense, I mean, a reduction formula.
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