$\int (3 \csc^2 x + 2 \sin 3x) \, dx = $

  • A
    $3 \cot x + \frac{2}{3} \cos 3x + c$
  • B
    $- (3 \cot x + \frac{2}{3} \cos 3x) + c$
  • C
    $3 \cot x - \frac{2}{3} \cos 3x + c$
  • D
    इनमें से कोई नहीं

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