$\cos \left(\sin ^{-1} \frac{1}{5}+\cos ^{-1} x\right)=0$ है,तो $x=$ . . . . . . .

  • A
    $0$
  • B
    $\frac{1}{5}$
  • C
    $5$
  • D
    $1$

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मान ज्ञात कीजिए: ${\tan ^{ - 1}}x + {\cot ^{ - 1}}(x + 1)$

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यदि $y = \sin^{-1} \left( \frac{\sqrt{1+x} + \sqrt{1-x}}{2} \right)$ है,तो $\frac{dy}{dx} = $

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