$[-/1,42$ Points$]$ WANEAC$83\mathrm{.}6\mathrm{.}025.$

Compute the derivative function $f^{\text{'}}(x)$ algebraically. HINT $[$See Examples $2$ and $3.]$

$f(x)=\frac{-8}{x}$

$f^{\text{'}}(x)=$

$$

$4.[-/1,42$ Points$]$ WANEAC$83\mathrm{.}6\mathrm{.}031.$

Compute the indicalled derivative.