$\int \frac{\sec^2 x \, dx}{\sqrt{\tan^2 x + 4}} = $

  • A
    $\log \left[ \tan x + \sqrt{\tan^2 x + 4} \right] + c$
  • B
    $\frac{1}{2} \log \left[ \tan x + \sqrt{\tan^2 x + 4} \right] + c$
  • C
    $\log \left[ \frac{1}{2} \tan x + \frac{1}{2} \sqrt{\tan^2 x + 4} \right] + c$
  • D
    इनमें से कोई नहीं

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