[plt-scheme] Tree recursion

From: Grant Rettke (grettke at acm.org)
Date: Tue Jan 22 22:11:43 EST 2008

Hi folks,

I am working on problem 2.8.1 in TSPL:

I am having a tough time visualizing this. I tried tracing it and
drawing it out on paper. What makes me think I don't understand this
well enough is that the answer is not obvious to me.

At risk of this being a dumb question, is there a good way to go about
understanding/visualizing this kind of recursion other than what I am
already doing?

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