$\begin{aligned} & 2 \sin ^{-1} x+\sin ^{-1}\left(2 x \sqrt{1-x^2}\right)+3 \cos ^{-1} x \\ & -\cos ^{-1}\left(4 x^3-3 x\right) \text{ની કિંમત શોધો. }\end{aligned}$

  • A
    $4 \sin ^{-1} x$, જ્યારે $x \in[-1,1]$
  • B
    $\pi$, જ્યારે $x \in\left[-1,-\frac{1}{\sqrt{2}}\right]$
  • C
    $-\pi$, જ્યારે $x \in\left[\frac{-1}{2}, \frac{1}{2}\right]$
  • D
    $4 \sin ^{-1} x+2 \cos ^{-1}\left(4 x^3-3 x\right), x \in\left[\frac{1}{\sqrt{2}}, 1\right]$

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જો $\theta = \tan^{-1}\left(\frac{1}{3}\right) + \tan^{-1}\left(\frac{1}{7}\right) + \tan^{-1}\left(\frac{1}{13}\right) + \tan^{-1}\left(\frac{1}{21}\right) + \tan^{-1}\left(\frac{1}{31}\right)$,તો $\tan \theta =$

ધારો કે $M$ અને $m$ એ અંતરાલ $[0, \frac{\pi}{2}]$ માં વિધેય $f(x) = \tan^{-1}(\sin x + \cos x)$ ની મહત્તમ અને ન્યૂનતમ કિંમતો છે. તો $\tan(M - m)$ ની કિંમત શોધો:

જો ${x^2} + {y^2} + {z^2} = {r^2}$ હોય,તો ${\tan ^{ - 1}}\left( {\frac{{xy}}{{zr}}} \right) + {\tan ^{ - 1}}\left( {\frac{{yz}}{{xr}}} \right) + {\tan ^{ - 1}}\left( {\frac{{zx}}{{yr}}} \right) = $

સાબિત કરો કે $\cot ^{-1}\left(\frac{\sqrt{1+\sin x}+\sqrt{1-\sin x}}{\sqrt{1+\sin x}-\sqrt{1-\sin x}}\right)=\frac{x}{2}$,જ્યાં $x \in\left(0, \frac{\pi}{4}\right)$.

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જો $\sin ^{-1} x+\cos ^{-1} y=\frac{3 \pi}{10}$ હોય,તો $\cos ^{-1} x+\sin ^{-1} y$ ની કિંમત શોધો.

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