यदि $y = \sec(\tan^{-1} x)$ है,तो $x = 1$ पर $\frac{dy}{dx}$ का मान ज्ञात कीजिए।

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

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