मूल्यांकन करें: $\int \frac{2 \cos x+1}{(2+\cos x)^2} d x - \frac{\sin x}{2+\cos x}$

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

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