Example 1.1.2

Draw $v=\left[\begin{array}{c}4\hfill \\ 1\hfill \end{array}\right]$ and $w=\left[\begin{array}{c}\hfill -2\\ \hfill 2\end{array}\right]$ and $v+w$ and $v-w$ in a single $\mathit{xy}$ plane.