http://demonstrations.wolfram.com/InstantlyPeriodicGeneralContinuedFractionRe...
The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.
This Demonstration provides a way to instantly write a periodic general continued fraction representation of square roots. This can be used as a quick way to easily approximate the numerical value of square roots.
Contributed by: Michael Morrison
beautiful. is there equally beautiful yet not hard proof ?
stockshunter 2 years ago