$\int \frac{\sin 2x}{(a+b \cos x)^2} dx =$

  • A
    $\frac{2}{b^2} \left[ \log |a+b \cos x| + \frac{a}{a+b \cos x} \right] + C$
  • B
    $\frac{-2}{b^2} \left[ \log |a+b \cos x| + \frac{a}{a+b \cos x} \right] + C$
  • C
    $\frac{-2}{b^2} \left[ \log |a+b \cos x| - \frac{a}{a+b \cos x} \right] + C$
  • D
    $\frac{2}{b^2} \left[ \log |a+b \cos x| - \frac{a}{a+b \cos x} \right] + C$

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