The original version of this file incorrectly omitted the
leap-year? argument for problem 7. This is now fixed.
There are two mistakes (discovered so far) on the
assignment:
For Problem 4, you should do Exercise 3, the income-tax
problem, in
Section 6.3. The procedure name is correctly indicated on the
assignment handout and in the assign1.scm file.
For Problem 9, the summation should be from i=1, not i=0.
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