$\int \frac{\sec x}{3(\sec x+\tan x)+2} d x=$

  • A
    $\frac{1}{2} \log \left|\frac{\tan \frac{x}{2}+1}{\tan \frac{x}{2}+5}\right|+c$
  • B
    $\frac{2}{\sqrt{11}} \tan ^{-1}\left(\frac{3 \tan \frac{x}{2}+4}{\sqrt{11}}\right)+c$
  • C
    $\log |3 \sec x+2 \tan x|+c$
  • D
    $\log |3 \tan x+2 \sec x|+c$

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