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Homework Statement
Derive that:
Correction (from a later post)
The integral on the left side should be ##\int \cos^m(x)\sin^n(x)~dx##
Homework Equations

The Attempt at a Solution
Anyone can help me on how to start?
## u = cos^m x ##
## du = m cos^{m1} x ##
## dv = sin^n x dx ##
## v = \frac{sin^{n+1} x}{n} ##
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