$\frac{4}{3}\left(\frac{x-1}{x+2}\right)^{1 / 4}+C$

$\frac{3}{4}\left(\frac{x-1}{x-2}\right)^{1 / 4}+C$

$\frac{4}{3}\left(\frac{x+2}{x-1}\right)^{1 / 4}+C$

$\frac{3}{4}\left(\frac{x-2}{x-1}\right)^{1 / 4}+C$

$\frac{1}{2} \sec ^{-1}\left(x^2+2\right)+C$

$-\operatorname{cosech}^{-1}\left(x^2+2\right)+C$

$\frac{1}{2} \tan ^{-1}\left(x+\frac{2}{x}\right)+C$

$-\frac{1}{2} \cot ^{-1}\left(x+\frac{2}{x}\right)+C$

2

-2

$2 \sqrt{2}$

$-2 \sqrt{2}$

$2 \log 2$

0

$\log \left(\frac{3}{4}\right)$

1