$\operatorname{sech}^{-1}\left(\frac{1}{3}\right)$

$\operatorname{cosech}^{-1}\left(\frac{1}{3}\right)$

$\cosh ^{-1}\left(\frac{4}{3}\right)$

$\sinh ^{-1}\left(\frac{3}{4}\right)$

$(-3)^2$

$(-2)^3$

3

$(-2)^5$

$\frac{1+x^2}{4 \sqrt{1-x^2}}$

$\frac{\left(1-x^2\right)}{4 \sqrt{1+x^2}}$

$-\frac{4\left(1-x^2\right)}{\sqrt{1+x^2}}$

$-\frac{4\left(1+x^2\right)}{\sqrt{1-x^2}}$

$A \cap B \neq \phi$

$A \cap B^C=[0,1]$

$A^C \cap B=\left[\frac{\pi}{3}, \frac{\pi}{2}\right]$

$A \cup B=R-\left\{[-1,0] \cup\left[\frac{\pi}{3}, \frac{\pi}{2}\right]\right\}$