$\int \frac{\cos 2x}{\cos x} dx = $

  • A
    $2 \sin x + \log |\sec x + \tan x| + C$
  • B
    $2 \sin x - \log |\sec x - \tan x| + C$
  • C
    $2 \sin x - \log |\sec x + \tan x| + C$
  • D
    $2 \sin x + \log |\sec x - \tan x| + C$

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