जब $x \in \left( {0, \frac{\pi }{2}} \right)$ है,तो $\frac{x}{2}$ के सापेक्ष ${\tan ^{ - 1}}\left( {\frac{{\sin x - \cos x}}{{\sin x + \cos x}}} \right)$ का अवकलज क्या है?

  • A
    $2$
  • B
    $\frac{1}{2}$
  • C
    $1$
  • D
    $\frac{2}{3}$

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यदि $y = \tan^{-1}\left(\frac{\sin x + \cos x}{\cos x - \sin x}\right)$ है,तो $\frac{dy}{dx}$ का मान ज्ञात कीजिए।

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