$\int \frac{\operatorname{cosec} x}{3 \cos x+4 \sin x} d x=$

  • A
    $\frac{1}{2} \log \left|\frac{\cos x}{3 \sin x+4 \cos x}\right|+c$
  • B
    $\frac{1}{3} \log \left|\frac{\sin x}{3 \cos x+4 \sin x}\right|+c$
  • C
    $\frac{1}{3} \log \left|\frac{3 \cos x+\sin x}{3 \cos x+4 \sin x}\right|+c$
  • D
    $\frac{1}{2} \log \left|\frac{\cos x+4 \sin x}{3 \cos x+4 \sin x}\right|+c$

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