<thomasguu@my-deja.com> wrote:
+---------------
| But I have problems defining sgrt and fixed-point:
| (define (sqrt <??>)
|  <??>
|  ((iterative-improve <??> <??>) 1.0))
+---------------

Do a Web (or textbook) search for "Newton-Raphson", and read
the description of the Newton-Raphson method of square roots.
You should then find it very straightforward to write an
"improve" function to pass to "iterative-improve".


-Rob

-----
Rob Warnock, 31-2-510		rpw3@sgi.com
Network Engineering		http://reality.sgi.com/rpw3/
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