मान लीजिए $S_n = \sum_{k=1}^n \frac{n}{n^2+kn+k^2}$ और $T_n = \sum_{k=0}^{n-1} \frac{n}{n^2+kn+k^2}$ जहाँ $n=1, 2, 3, \ldots$ है। तो,

  • A
    $S_n < \frac{\pi}{3\sqrt{3}}$
  • B
    $S_n > \frac{\pi}{3\sqrt{3}}$
  • C
    $T_n < \frac{\pi}{3\sqrt{3}}$
  • D
    $T_n > \frac{\pi}{3\sqrt{3}}$

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Similar Questions

दिया गया है कि $\lim _{n \rightarrow \infty} \frac{1}{n} \sum_{r=1}^{n p} f\left(\frac{r}{n}\right)=\int_0^p f(x) d x$. यदि $f: R \rightarrow R$ को $f(x)=x^2+2$ द्वारा परिभाषित किया गया है, तो $\lim _{n \rightarrow \infty} \frac{3}{n}\left[f\left(\frac{7}{n}\right)+f\left(\frac{14}{n}\right)+f\left(\frac{21}{n}\right)+\ldots+f(7)\right]=$

$\lim _{n \rightarrow \infty} \frac{\sqrt{1}+\sqrt{2}+\ldots+\sqrt{n-1}}{n \sqrt{n}}$ का मान ज्ञात कीजिए।

$\lim _{n \rightarrow \infty} \left( \frac{1}{\sqrt{4n^2-1}} + \frac{1}{\sqrt{4n^2-4}} + \dots + \frac{1}{\sqrt{4n^2-n^2}} \right)$ का मान है

$\mathop {\lim }\limits_{n \to \infty } \frac{1}{{{n^2}}}\left[ {1\cos \frac{1}{{{n^2}}} + 2\cos \frac{4}{{{n^2}}} + 3\cos \frac{9}{{{n^2}}} + .... + 2n\cos 4} \right]$ का मान ज्ञात कीजिए।

$\lim _{n \rightarrow \infty} \frac{1}{n^{k+1}}\left[2^k+4^k+6^k+\ldots+(2 n)^k\right]=$

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