$\frac{d}{d x}\left(\cos ^{-1}\left(\frac{4 x^3}{27}-x\right)\right)=$

  • A
    $\frac{3}{\sqrt{9-x^2}}$
  • B
    $\frac{1}{\sqrt{9-x^2}}$
  • C
    $\frac{-3}{\sqrt{9-x^2}}$
  • D
    $\frac{-1}{\sqrt{9-x^2}}$

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જો $y = \tan^{-1} \left\{ \frac{\sqrt{1 + x^2} - \sqrt{1 - x^2}}{\sqrt{1 + x^2} + \sqrt{1 - x^2}} \right\}$, જ્યાં $|x| < 1$, તો $\frac{dy}{dx}$ ની કિંમત શોધો

$\frac{d}{dx} \left( \tan^{-1} \frac{x}{\sqrt{a^2 - x^2}} \right) = $

$y=\tan ^{-1}\left(\frac{\sqrt{1+x^2}-1}{x}\right)$ નું વિકલન શું થાય?

$\frac{d}{dx} \left\{ \sin^2 \left( \cot^{-1} \sqrt{\frac{1 + x}{1 - x}} \right) \right\} =$

જો $f(x)=\cot ^{-1}\left(\frac{x^x-x^{-x}}{2}\right)$ હોય,તો $f^{\prime}(1)=$

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