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∫ E X ( 1 − Cot X + Cot 2 X ) D X = - Mathematics

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Question

\[\int e^x \left( 1 - \cot x + \cot^2 x \right) dx =\]

Options

  •  ex cot x + C

  • ex cot x + C

  •  ex cosec x + C

  • ex cosec x + C

MCQ
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Solution

ex cot x + 

\[\text{Let }I = \int e^x \left( 1 - \cot x + \cot^2 x \right)dx\]

\[ = \int e^x \left( {cosec}^2 x - \cot x \right)dx\]

\[\text{As we know that }\int e\left\{ f\left( x \right) + f' {}^x \left( x \right) \right\} = e^x f\left( x \right) + C\]

\[ \therefore I = - e^x \cot x + C\]

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Chapter 19: Indefinite Integrals - MCQ [Page 201]

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RD Sharma Mathematics [English] Class 12
Chapter 19 Indefinite Integrals
MCQ | Q 14 | Page 201

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