यदि $y=\tan ^{-1}\left(\frac{5 x+1}{3-x-6 x^2}\right)$ है,तो $\frac{d y}{d x}=$

  • A
    $\frac{3}{9 x^2+12 x+5}+\frac{1}{2 x^2-2 x+1}$
  • B
    $\frac{1}{9 x^2+12 x+5}+\frac{1}{4 x^2-4 x+2}$
  • C
    $\frac{1}{9 x^2+12 x+5}-\frac{1}{4 x^2-4 x+2}$
  • D
    $\frac{3}{9 x^2+12 x+5}-\frac{1}{2 x^2-2 x+1}$

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