यदि $y = \sin x + e^x$ है,तो $\frac{d^2x}{dy^2} = $

  • A
    $(\sin x - e^x)^{-1}$
  • B
    $\frac{\sin x - e^x}{(\cos x + e^x)^2}$
  • C
    $\frac{\sin x - e^x}{(\cos x + e^x)^3}$
  • D
    $\frac{\sin x + e^x}{(\cos x + e^x)^3}$

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यदि $e^{y}(x+1)=1$ है,तो दर्शाइए कि $\frac{d^{2} y}{d x^{2}}=\left(\frac{d y}{d x}\right)^{2}$.

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