Chapter 14.5, Problem 1QCE

The iterated integral

${\displaystyle {\int }_1^5{\displaystyle {\int }_2^4{\displaystyle {\int }_3^{6}f\left(x,y,z\right)dxdzdy}}}$

integrates $f$ over the rectangular box defined by

$\begin{array}{l}\text{\_\_\_\_\_\_}\le x\le \text{\_\_\_\_\_\_},\text{\_\_\_\_\_\_}\le y\le \text{\_\_\_\_\_\_},\\ \text{\_\_\_\_\_\_}\le z\le \text{\_\_\_\_\_\_}\end{array}$