$\lim _{x \rightarrow \frac{\pi}{4}} \frac{\sqrt{2} \cos x-1}{\cot x-1}$ का मान ज्ञात कीजिए।

  • A
    $2$
  • B
    $\sqrt{2}$
  • C
    $1/2$
  • D
    $1/\sqrt{2}$

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$\lim _{x \rightarrow \frac{\pi}{2}}\left(\frac{1}{\left(x-\frac{\pi}{2}\right)^2} \int_{x^3}^{\left(\frac{\pi}{2}\right)^3} \cos \left(t^{1/3}\right) d t\right)$ का मान ज्ञात कीजिए।

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