Chapter 13.2, Problem 48E

To determine

Which of ${\displaystyle \underset{0}{\overset{a}{\int }}f\left(x\right)dx}$ or ${\displaystyle \underset{0}{\overset{a}{\int }}g\left(x\right)dx}$ is larger or are equal where the figure represents the functions $f\left(x\right)$ and $g\left(x\right)$.