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# Reduction formula help watch

1. Obtain a reduction formula for
<a href="http://www.codecogs.com/eqnedit.php?latex=I_{n}=\int \sin ^n (x) \cos ^n (x) dx" target="_blank"><img src="http://latex.codecogs.com/png.latex?I_{n}=\int \sin ^n (x) \cos ^n (x) dx" title="I_{n}=\int \sin ^n (x) \cos ^n (x) dx" /></a>
2. For what it's worth, TSR has LaTeX functionality; just surround the LaTeX code with [ latex ] and [ /latex ] (no spaces).

Anyway, do you know how to find the reduction formula for ? This is very similar, you just need to use a trig identity first.

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Updated: April 10, 2011
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