$\mathop {\lim }\limits_{n \to \infty } \left( {\frac{{{{\left( {n + 1} \right)}^{1/3}}}}{{{n^{4/3}}}} + \frac{{{{\left( {n + 2} \right)}^{1/3}}}}{{{n^{4/3}}}} + \dots + \frac{{{{\left( {2n} \right)}^{1/3}}}}{{{n^{4/3}}}}} \right)$ का मान ज्ञात कीजिए।

  • A
    $\frac{3}{4}(2^{4/3} - 1)$
  • B
    $\frac{4}{3}(2^{3/4})$
  • C
    $\frac{3}{4}(2^{4/3}) - \frac{4}{3}$
  • D
    $\frac{4}{3}(2^{4/3})$

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

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