यदि $f:R \to R$ एक अवकलनीय फलन है और $f(2) = 6$ है,तो $\lim_{x \to 2} \int_{6}^{f(x)} \frac{2t \, dt}{x - 2}$ का मान क्या है?

  • A
    $0$
  • B
    $2f'(2)$
  • C
    $12f'(2)$
  • D
    $24f'(2)$

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$\tan ^{-1}\left(\frac{\sqrt{1+x^2}-1}{x}\right)$ का $\cos ^{-1}\left(\sqrt{\frac{1+\sqrt{1+x^2}}{2 \sqrt{1+x^2}}}\right)$ के सापेक्ष अवकलन क्या है?

यदि $y = \tan^{-1}\left(\frac{4x}{1+5x^2}\right) + \tan^{-1}\left(\frac{3+8x}{8-3x}\right)$ है,तो $\frac{dy}{dx} = $

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