$\int(\sqrt{\tan x}+\sqrt{\cot x}) d x=$

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

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