$\int \frac{dx}{2x^2 + x + 1}$ का मान ज्ञात कीजिए।

  • A
    $\frac{1}{\sqrt{7}} \tan^{-1} \left( \frac{4x + 1}{\sqrt{7}} \right) + C$
  • B
    $\frac{1}{2\sqrt{7}} \tan^{-1} \left( \frac{4x + 1}{\sqrt{7}} \right) + C$
  • C
    $\frac{1}{2} \tan^{-1} \left( \frac{4x + 1}{\sqrt{7}} \right) + C$
  • D
    इनमें से कोई नहीं

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