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∫ Cot N C O S E C 2 X D X , N ≠ − 1 - Mathematics

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Question

\[\int \cot^n {cosec}^2 \text{ x dx } , n \neq - 1\]
Sum
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Solution

∫ cotn x cosec2 x dx
Let cot x = t
⇒ –cosec2 x dx = dt
⇒ cosec2 x dx = –dt

\[Now, \int \cot^n \text{ x } {cosec}^2  \text  { x dx  }\]
\[ = - \int t^n dt \]
\[ = \frac{- t^{n + 1}}{n + 1} + C\]
\[ = - \frac{\cot^{n + 1} x}{n + 1} + C\]

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Chapter 19: Indefinite Integrals - Exercise 19.11 [Page 69]

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RD Sharma Mathematics [English] Class 12
Chapter 19 Indefinite Integrals
Exercise 19.11 | Q 9 | Page 69

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