यदि $y = \cot^{-1} \left( \frac{1 + x}{1 - x} \right)$ है,तो $\frac{dy}{dx} = $

  • A
    $\frac{1}{1 + x^2}$
  • B
    $-\frac{1}{1 + x^2}$
  • C
    $\frac{2}{1 + x^2}$
  • D
    $-\frac{2}{1 + x^2}$

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यदि $3 \sin ^{-1}\left(\frac{2 x}{1+x^2}\right)-4 \cos ^{-1}\left(\frac{1-x^2}{1+x^2}\right)+2 \tan ^{-1}\left(\frac{2 x}{1-x^2}\right)=\frac{\pi}{3}$ है,तो $x$ का मान ज्ञात कीजिए।

यदि $\tan^{-1}x + \tan^{-1}y + \tan^{-1}z = \pi$ है,तो $x + y + z$ का मान क्या होगा?

$\tan \left\{\frac{1}{2} \sin ^{-1}\left(\frac{2 x}{1+x^2}\right)+\frac{1}{2} \cos ^{-1}\left(\frac{1-y^2}{1+y^2}\right)\right\}$ का मान है

यदि $\sin^{-1} \frac{3}{5} + \cos^{-1} \frac{12}{13} = \sin^{-1} C$ है,तो $C =$

यदि $2 \sin^{-1} x = \sin^{-1}(2x \sqrt{1-x^2})$ है,तो $x \in$ . . . . . . .

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