$\int \frac{1}{1+3 \sin ^2 x+8 \cos ^2 x} d x$ का मान ज्ञात कीजिए।

  • A
    $\tan ^{-1}\left(\frac{2 \tan x}{3}\right)+C$
  • B
    $\frac{1}{6} \tan ^{-1}\left(\frac{2 \tan x}{3}\right)+C$
  • C
    $6 \tan ^{-1}\left(\frac{2 \tan x}{3}\right)+C$
  • D
    $\frac{1}{6} \tan ^{-1}(2 \tan x)+C$

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