An Example Vector View: $N=2$

Consider the example two-sample signal $x=(2, 3)$ graphed in Fig.5.1.

Figure 5.1: A length 2 signal $x=(2, 3)$ plotted as a vector in 2D space.

Under the geometric interpretation of a length $N$ signal, each sample is a coordinate in the $N$ dimensional space. Signals which are only two samples long are not terribly interesting to hear,^5.2 but they are easy to plot geometrically.