यदि $f(x) = 3x^{10} - 7x^8 + 5x^6 - 21x^3 + 3x^2 - 7$ है,तो $\lim_{\alpha \rightarrow 0} \frac{f(1-\alpha) - f(1)}{\alpha^3 + 3\alpha} = $

  • A
    $\frac{53}{3}$
  • B
    $\frac{-53}{3}$
  • C
    $\frac{52}{3}$
  • D
    $\frac{-52}{3}$

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यदि $f$ एक वास्तविक फलन इस प्रकार है कि $f(4)=4$ और $f^{\prime}(4)=16$,तो $\lim _{x \rightarrow 4} \frac{\sqrt{f(x)}-2}{\sqrt{x}-2} =$

$\mathop {\lim }\limits_{x \to 0} \frac{{\cos ax - \cos bx}}{{{x^2}}} = $

$\lim _{x \rightarrow 0} \frac{x 2^{x}-x}{1-\cos x}$ का मान ज्ञात कीजिए।

$\lim _{x \rightarrow \pi / 6} \left[ \frac{3 \sin x - \sqrt{3} \cos x}{6x - \pi} \right]$ का मान ज्ञात कीजिए:

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