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∫ E 2 X ( − Sin X + 2 Cos X ) D X - Mathematics

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Question

∴\[\int e^{2x} \left( - \sin x + 2 \cos x \right) dx\]
Sum
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Solution

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

\[\text{ Put  e}^{2x} \cos x = t\]

\[\text{ Diff  both  sides  w . r . t x }\]

\[\left[ 2 e^{2x} \cos x + e^{2x} \times \left( - \sin x \right) \right]dx = dt\]

`  ∴   \text{ I } = \int   dt `

\[ = t + C\]

\[ = e^{2x} \cos x + C\]

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Chapter 19: Indefinite Integrals - Exercise 19.26 [Page 143]

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RD Sharma Mathematics [English] Class 12
Chapter 19 Indefinite Integrals
Exercise 19.26 | Q 19 | Page 143

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