indefinite-integration

Question: $\int_{{}}^{{}}{{{x}^{51}}({{\tan }^{-1}}x+{{\cot }^{-1}}x)\ dx=}$



1) $\frac{{{x}^{52}}}{52}({{\tan }^{-1}}x+{{\cot }^{-1}}x)+c$
2) $\frac{{{x}^{52}}}{52}({{\tan }^{-1}}x-{{\cot }^{-1}}x)+c$
3) $\frac{\pi {{x}^{52}}}{104}+\frac{\pi }{2}+c$
4) $\frac{{{x}^{52}}}{52}+\frac{\pi }{2}+c$
Solution: Explanation: No Explanation
Fundamental integration

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