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Question Number 79500 by ubaydulla last updated on 25/Jan/20

$$\int (\cot {}^{2}x+\cot {}^{4}x)dx$$

Answered by john santu last updated on 25/Jan/20

$$\int \cot {}^{2}x(1+\cot {}^{2}x)dx=$$$$\int \cot {}^{2}x\mathrm{cosec}{}^{2}xdx=$$$$\int -\cot {}^{2}xd\left(\cot x\right)=$$$$-\frac{1}{3}\cot {}^{3}x+c$$

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