ધારો કે $\int\limits_0^1 {{{\tan }^{ - 1}}\left( {\frac{{\tan x}}{2}} \right)} dx = \alpha $ છે,તો $\int\limits_0^1 {{{\tan }^{ - 1}}\left( {\frac{{\tan x - 2\cot x}}{3}} \right)} dx$ ની કિંમત શોધો.

  • A
    $\pi - \alpha + \frac{1}{2}$
  • B
    $\alpha - \frac{\pi }{2} - 1$
  • C
    $\alpha + \pi - 1$
  • D
    $\alpha - \frac{\pi }{2} + \frac{1}{2}$

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