यदि $f(x) = \cos^{-1}\left[ \frac{1 - (\log x)^2}{1 + (\log x)^2} \right]$ है,तो $f'(e)$ का मान ज्ञात कीजिए।

  • A
    $1$
  • B
    $\frac{1}{e}$
  • C
    $\frac{2}{e}$
  • D
    $\frac{2}{e^2}$

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यदि $f(x) = \sqrt{x^2 + 1}$, $g(x) = \frac{x + 1}{x^2 + 1}$, और $h(x) = 2x - 3$ है, तो $f'(h'(g'(x)))$ का मान ज्ञात कीजिए।

यदि $f(x) = \sin \left(\cosh \left(\frac{x^2+1}{x^2+2}\right)\right)$ है, तो $f^{\prime}(1) = $

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