જો $4 \sin ^{-1} x + \cos ^{-1} x = \pi$ હોય,તો $x = $

  • A
    $\frac{\sqrt{3}}{2}$
  • B
    $0$
  • C
    $\frac{1}{2}$
  • D
    $\frac{1}{\sqrt{2}}$

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જો $y = \sec^{-1}\left(\frac{1}{2x^2 - 1}\right)$ હોય,તો $\frac{dy}{dx}$ શોધો,જ્યાં $0 < x < \frac{1}{\sqrt{2}}$.

જો $\cos \left(\cos ^{-1} \frac{\sqrt{3}}{2}+\sin ^{-1} x\right)=1$ હોય,તો $x$ ની કિંમત શોધો.

$\tan^{-1}(-2) - \tan^{-1}(3)$ ની કિંમત શોધો.

ધારો કે $f(x) = \cos^{-1}\left(\frac{2x}{1+x^2}\right) + \sin^{-1}\left(\frac{1-x^2}{1+x^2}\right)$,તો $f(1) + f(2)$ ની કિંમત શોધો.

જો ${\cos ^{ - 1}}x + {\cos ^{ - 1}}y + {\cos ^{ - 1}}z = 3\pi ,$ હોય,તો $xy + yz + zx = $

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