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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.
\includegraphics[scale=0.7]{eps/vec2d}
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.
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