Question
Define the radius $r$ of a tree using the concepts of eccentricity and center. The diameter $d$ of any graph was defined before Exercise $71,$ Section $8.2 .$ Is it always true, according to your definition of radius, that $2 r=d ?$ Explain.
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In other words, the eccentricity of $v$ is the maximum length of any path starting from $v$. Show more…
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