## Thomas' Calculus 13th Edition

$\left\{\begin{array}{l} 0\leq x\leq 2\\ 0\leq y\leq 2\\ 0\leq z\leq 2 \end{array}\right.$
Observe the points (x,y,z) in the cube. The x-coordinates vary from 0 to 2, inclusive. The y-coordinates vary from 0 to 2, inclusive. The z-coordinates vary from 0 to 2, inclusive. The conditions on the coordinates can be written as $\left\{\begin{array}{l} 0\leq x\leq 2\\ 0\leq y\leq 2\\ 0\leq z\leq 2 \end{array}\right.$