यदि $y = e^{\cos ^{-1}\left(\sqrt{1-x^2}\right)}$ है,तो $\frac{1}{y} \frac{d y}{d x}$ ज्ञात कीजिए।

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

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