$\int \frac{dx}{x^2 + 4x + 13}$ का मान ज्ञात कीजिए।

  • A
    $\log(x^2 + 4x + 13) + c$
  • B
    $\frac{1}{3} \tan^{-1} \left( \frac{x + 2}{3} \right) + c$
  • C
    $\log(2x + 4) + c$
  • D
    $\frac{2x + 4}{(x^2 + 4x + 13)^2} + c$

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