$\operatorname{sech}^{-1}\left(\frac{1}{\sqrt{2}}\right)+\operatorname{cosech}^{-1}(-1)=$

  • A
    $0$
  • B
    $\sqrt{2}+1$
  • C
    $\sqrt{2}$
  • D
    $\sqrt{2}-1$

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વિકલ વિધેયના મુખ્ય મૂલ્યોને ધ્યાનમાં લેતા,ગણ $A = \{x \geq 0 \mid \tan^{-1} x + \tan^{-1} 6x = \frac{\pi}{4}\}$

જો $\cos ^{-1} x = \sin ^{-1}(3x)$ હોય,તો $x$ ની કિંમત શોધો.

$\tan ^{-1}\left(\tan \frac{31 \pi}{6}\right)=$ . . . . . . .

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

જો $y = \cos^{-1}(\sin x)$, જ્યાં $\frac{\pi}{2} < x < \pi$, તો $\frac{dy}{dx} = \dots$

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