$\lim _{n \rightarrow \infty} \sum_{r=1}^n \frac{r^3}{r^4+n^4}$ का मान है

  • A
    $\frac{1}{2} \log _{e}(1 / 2)$
  • B
    $\frac{1}{4} \log _e(1 / 2)$
  • C
    $\frac{1}{4} \log _{e} 2$
  • D
    $\frac{1}{2} \log _{e} 2$

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$\lim _{n \rightarrow \infty}\left[\frac{1}{n}+\frac{n}{(n+1)^{2}}+\frac{n}{(n+2)^{2}}+\ldots+\frac{n}{(2 n-1)^{2}}\right]$ का मान ...... है।

$\int_0^3 (2+x^2) dx = $

$\mathop {\lim }\limits_{n \to \infty } \sum\limits_{k = 1}^n {\frac{k}{{{n^2} + {k^2}}}} $ का मान ज्ञात कीजिए।

Difficult
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$\lim _{n \rightarrow \infty}\left[\frac{n}{n^2+1^2}+\frac{n}{n^2+2^2}+\ldots+\frac{n}{n^2+n^2}\right]=$

यदि $\lim _{n \rightarrow \infty} \sum_{r=1}^n \frac{4 r^3}{r^4+n^4}=p$ है,तो $e^p=$

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