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JEE MATHEMATICS MCQ: INDEFINITE INTEGRATION

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The value of ∫  cos⁡3  x  +  cos⁡5  xsin⁡2  x  +  sin⁡4  x  dx\int \,\,\frac{{{{\cos }^3}\,\,x\,\, + \,\,{{\cos }^5}\,\,x}}{{{{\sin }^2}\,\,x\,\, + \,\,{{\sin }^4}\,\,x}}\,\,dx, is
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Correct option: C
sin⁡  x  −  2  (sin⁡  x)−1  −  6  tan⁡−1  (sin⁡  x)+C\sin \,\,x\,\, - \,\,2\,\,{\left( {\sin \,\,x} \right)^{ - 1}}\,\, - \,\,6\,\,{\tan ^{ - 1}}\,\,\left( {\sin \,\,x} \right) + C
Option C is correct because the integral simplifies to sin⁡x−2(sin⁡x)−1−6tan⁡−1(sin⁡x)+C\sin x - 2(\sin x)^{-1} - 6\tan^{-1}(\sin x) + C after substitution and partial fraction decomposition.

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