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

  • A
    $1 + \sqrt{5}$
  • B
    $-1 + \sqrt{5}$
  • C
    $-1 + \sqrt{2}$
  • D
    $1 + \sqrt{2}$

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$\lim _{n \rightarrow \infty} \frac{1}{n^3} \sum_{k=1}^n (k^2 x)$ का मान है

$\int_{0}^{1} a^k x^k dx =$

$a \in \mathbb{R}$ (सभी वास्तविक संख्याओं का समुच्चय) के लिए,$a \neq -1$,यदि $\lim_{n \to \infty} \frac{1^a + 2^a + \dots + n^a}{(n+1)^{a-1}[(na+1) + (na+2) + \dots + (na+n)]} = \frac{1}{60}$ है,तो $a$ का मान ज्ञात कीजिए:

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