procedure is only the simplest of a vast number of similar abstractions that can be captured as higher-order procedures. Write an analogous procedure called
that returns the product of the values of a function at points over a given range. Show how to define
in terms of product
. Also use this procedure to compute approximations to
using the formula
π 2·4·4·6·6·8··· - = -------------- 4 3·3·5·5·7·7···
b. If your
procedure generates a recursive process, write one that generates an iterative process. If it generates an iterative process, write one that generates a recursive process.
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