On Thu, 20 Jul 2006, John J. Trammell wrote: > On Thu, Jul 20, 2006 at 03:53:04PM -0500, Dan Drake wrote: >> The other day I learned that Ramanujan (a famous Indian mathematician >> from the WWI era) had an expression that matched pi to 9 decimal >> places: >> >> (98.5 - 1/11)^(1/4) >> > > 97.5 perhaps? And I only get 8 decimal places. With 97.5 it is good for 8 and the 9th is off by only 1: (97.5 - 1/11)^(1/4) - pi ans = -1.00714681039449e-09 Ramanujan was extremely good with Pi and he developed many fascinating equations for Pi. Mike