જો $x = \sqrt{a^{\sin^{-1} t}}$ અને $y = \sqrt{a^{\cos^{-1} t}}$ હોય,તો $\frac{dy}{dx} = $

  • A
    $\frac{y}{x}$
  • B
    $\frac{-x}{y}$
  • C
    $\frac{x}{y}$
  • D
    $-\frac{y}{x}$

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