Question
$\int_{}^{} {\frac{{{x^2} + 1}}{{{x^4} + 1}}dx = } $
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$(\mathrm{S} 2): \lim _{\mathrm{n} \rightarrow \infty} \frac{1}{\mathrm{n}^{16}}\left(1^{15}+2^{15}+3^{15}+\ldots \ldots \ldots .+\mathrm{n}^{15}\right)=\frac{1}{16}$
में से
$(A)$ $1-\sqrt{\frac{3}{2}}$ $(B)$ $1+\sqrt{\frac{3}{2}}$ $(C)$ $1-\sqrt{\frac{2}{3}}$ $(D)$ $1+\sqrt{\frac{2}{3}}$