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Obtain reduction formula for I(n)=int co...

Obtain reduction formula for `I_(n)=int cot^(n) x dx`, n being a positive integer , `n ge 2` and deduce the value of `int cot^(4) x dx`.

Text Solution

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The correct Answer is:
`= (-cot^(3)x)/(3)+cotx +x+c`.
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