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    Hi

    Can anyone tell me how to integrate sin^2(2x)cos(2x). This is an FP2 question but I think to do this is more to do with c4 knowledge.

    Thanks
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    (Original post by helpme:))
    Hi

    Can anyone tell me how to integrate sin^2(2x)cos(2x). This is an FP2 question but I think to do this is more to do with c4 knowledge.

    Thanks
     u = \sin2x
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    Could you substitute sin(2x)cos(2x) with half sin(4x)

    actually edit: doubt it makes it easier
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    Reverse chain rule
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    You could integrate by recognition \displaystyle \int{f'(x)[f(x)]^n}dx = \frac{[f(x)]^{n+1}}{n+1}+c
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    Hi guys that replyed, thanks for being so quick! I think so we have finished fp2 and have not rly done much c4 so i have no clue how to integrate by substiution so I will probs ask my teacher but honestly thanks guys
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    https://www.symbolab.com/solver/inde...%5Cright)%20dx

    may be of some help.
 
 
 
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