$\int_0^{\pi /4} \frac{1 + \tan x}{1 - \tan x} \, dx$ का मान है

  • A
    $- \frac{1}{2} \log 2$
  • B
    $\frac{1}{4} \log 2$
  • C
    $\frac{1}{3} \log 2$
  • D
    इनमें से कोई नहीं

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