Wondering about Domingo's Rational Mean book

[Kirby Urner]

 > >>> halley(2,3)             # 3rd root of 10 to depth 10
                                             ^^
                                             2
Sorry, typo.

If anyone on comp.lang.python wants me to post source 
code for the giant root fractions, let me know.  

Don't worry, I won't clutter sci.math with such stuff.

Kirby