Integration help

  • Thread starter Zoe-b
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Homework Statement


Part of a question has brought up this problem:

find the integral of cos(n arcsin x) * xm dx
where n and m are positive integers > 1.


Homework Equations


Not sure- if the n wasn't there I would simplify it to (1-x2)1/2 * xm which would make it easier but as it is I'm not sure how to proceed.
Using a maths programme I have it seems to be able to integrate it only if n is even.. but I have no idea why this is or how to get to the answer.

The Attempt at a Solution


Haven't got very far at all as you can see, sorry.
I already did a substitution from cos(u) * cos (nu) * (sin u)m du to the above where x = sin u.
 

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