Try It Now

Work these exercises to see how well you understand this material.


  1. Suppose that after Atlantis University's phone system is in place, a fifth campus is established and that a transmission line can be bought to connect the new campus to any old campus. Is this larger system the most economical one possible with respect to Objective 1? Can you always satisfy Objective 2?

  2. Show that the answer to the question posed in Example 10.2.7 is "no".


Source: Al Doerr and Ken Levasseur,
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