Chapter 8, Problem 13CRQ

To determine

To fill: “The integral ${\displaystyle \underset{R}{\iint }f\left(x,y\right)}dA$ is evaluated by using _____ integrals. For example, ${\displaystyle \underset{R}{\iint }\left(2x+y^2\right)}dA$, where $R=\left\{\left(x,y\right)|0\le x\le 1;3\le y\le 5\right\}$, is equal to ${\displaystyle \underset{0}{\overset{1}{\int }}{\displaystyle \underset{3}{\overset{5}{\int }}\left(2x+y^2\right)}}dydx$ or the (iterated) integral ______”.