Suppose the units of $\displaystyle {f{{\left({x}\right)}}}$ are liters, when $\displaystyle {x}$ is measured in hours.

The units of $\displaystyle {f}'{\left({x}\right)}$ will be



And the units of $\displaystyle \int{f{{\left({x}\right)}}}\ {\left.{d}{x}\right.}$ will be