Question: In Section 5.2 we prove by induction that the number of lines printed by a call to drawInterval(c) is 2 c 1. Another interesting question

In Section 5.2 we prove by induction that the number of lines printed by a call to drawInterval(c) is 2^c−1. Another interesting question is how many dashes are printed during that process. Prove by induction that the number of dashes printed by drawInterval(c) is 2^c+1−c−2.

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