2. Write a Scheme function "max-find" that returns the maximum of a
list of integers. So, for example,
(max-find '(1 3 5 7)) is 7.
3. Write a Scheme function that computes the first n
"sum-of-squares". So, for example,
(sum-of-squares 4) is 1 + 4 + 9 +
16 = 30. The function should return a single integer that is the sum
of the squares of the first n integers where n is the single argument.
4. Write a Scheme function that will "append" one list together with
another. So, for example,
(append '(1 2 3) '(4 5 6)) is (1 2 3 4 5 6).
The function should return a single list that is the concatenation of
the two arguments.
5. Write a Scheme function that will "flatten" a list. So, for
example,
(flatten '((1 2) () 3 4 ((5)))) is (1 2 3 4 5). The function
should return a flat list containing the same values as the original
list, and in the same order.