यदि $y = \sin(\sin x)$ और $y'' + f(x) \cdot y' + g(x) \cdot y = 0$ है,तो $f(x) \cdot g(x) =$

  • A
    $\frac{1}{2} \sin(2x)$
  • B
    $\frac{1}{2} \cos(2x)$
  • C
    $\sin(2x)$
  • D
    $\cos(2x)$

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