$\cosh \left(\sinh ^{-1}(\sqrt{8})+\cosh ^{-1} 5\right)=$

  • A
    $\sqrt{6}+4 \sqrt{2}$
  • B
    $15+8 \sqrt{3}$
  • C
    $6 \sqrt{6}+10 \sqrt{2}$
  • D
    $8-15 \sqrt{3}$

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सिद्ध कीजिए कि $3 \sin ^{-1} x = \sin ^{-1}(3 x - 4 x^{3})$,जहाँ $x \in [-\frac{1}{2}, \frac{1}{2}]$.

सिद्ध कीजिए कि $\cot ^{-1}\left(\frac{\sqrt{1+\sin x}+\sqrt{1-\sin x}}{\sqrt{1+\sin x}-\sqrt{1-\sin x}}\right)=\frac{x}{2}$,जहाँ $x \in\left(0, \frac{\pi}{4}\right)$.

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$\sin ^{-1} \frac{4}{5} + 2 \tan ^{-1} \frac{1}{3}$ का मान ज्ञात कीजिए।

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

$\tan \left(\sin ^{-1} \frac{3}{5}+\cot ^{-1} \frac{3}{2}\right)$ का मान ज्ञात कीजिए।

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