$x=\frac{1}{5}$ હોય ત્યારે $\cos \left(2 \cos ^{-1} x+\sin ^{-1} x\right)$ નું મૂલ્ય શોધો.

  • A
    $-\frac{\sqrt{6}}{5}$
  • B
    $\frac{2 \sqrt{6}}{5}$
  • C
    $-\frac{2 \sqrt{6}}{5}$
  • D
    $\frac{2 \sqrt{5}}{6}$

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$\tan \left(2 \tan ^{-1}\left(\frac{3}{5}\right)+\sin ^{-1}\left(\frac{5}{13}\right)\right)$ ની કિંમત શોધો:

જો $x \in \left(0, \frac{1}{4}\right)$ માટે,$\tan^{-1}\left(\frac{6x\sqrt{x}}{1-9x^3}\right)$ નું વિકલન $\sqrt{x} \cdot g(x)$ હોય,તો $g(x)$ ની કિંમત શોધો.

$2 \tan^{-1}(\cos x) = \tan^{-1}(\csc^2 x)$ હોય,તો $x = $

જો $y = \cos^{-1}\left(\frac{2x}{1+x^2}\right)$ હોય,તો $\frac{dy}{dx}$ શોધો,જ્યાં $-1 < x < 1$.

$\tan ^{-1} \sqrt{3} - \cot ^{-1}(-\sqrt{3}) = $ . . . . . . .

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