Compute the density of each of the three clusters in Fig. 7.2, if "density" is defined to be the number of points divided by
(a) The square of the radius.
(b) The diameter (not squared).
What are the densities, according to (a) and (b), of the clusters that result from the merger of any two of these three clusters.
Does the difference in densities suggest the clusters should or should not be merged?
