$\begin{aligned} & 2 \sin ^{-1} x+\sin ^{-1}\left(2 x \sqrt{1-x^2}\right)+3 \cos ^{-1} x \\ & -\cos ^{-1}\left(4 x^3-3 x\right) \text{का मान ज्ञात कीजिए।}\end{aligned}$

  • A
    $4 \sin ^{-1} x$, जब $x \in[-1,1]$
  • B
    $\pi$, जब $x \in\left[-1,-\frac{1}{\sqrt{2}}\right]$
  • C
    $-\pi$, जब $x \in\left[\frac{-1}{2}, \frac{1}{2}\right]$
  • D
    $4 \sin ^{-1} x+2 \cos ^{-1}\left(4 x^3-3 x\right), x \in\left[\frac{1}{\sqrt{2}}, 1\right]$

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यदि $0 < x < \frac{1}{2}$ के लिए $y = 2\sin^{-1} \sqrt{1-x} + \sin^{-1} (2\sqrt{x(1-x)})$ है,तो $\frac{dy}{dx}$ का मान ज्ञात कीजिए।

$\cos \left[ 2\cos^{-1}\frac{1}{5} + \sin^{-1}\frac{1}{5} \right] = $

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

$\tan ^{-1}\left(\frac{1}{3}\right)+\tan ^{-1}\left(\frac{1}{5}\right)+\tan ^{-1}\left(\frac{1}{7}\right)+\tan ^{-1}\left(\frac{1}{8}\right)$ का मान है

यदि $\sec ^{-1}\left(\frac{5}{x}\right)+\sin ^{-1} \left(\frac{4}{5}\right)=\frac{\pi}{2}$,जहाँ $x \neq 0$,तो $x=$ . . . . . . .

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