28 Jan
2013
28 Jan
'13
6:29 a.m.
Dear Éric, this fact : the 0.999999 being equivalent to 1 is part of the f.a.q. of maths, there are numerous ways to justify that 0.9999999 = 1. And, as far as I know this is the only case where the writing of a number may differ, I mean by that : there is only 1 way to write 2/3 in decimal which is 0.66666666666666... (with 3 dots) or 0.66666666666667 when rounded and no ... The classic text : Hardy & Wright devotes a whole chapter on these questions. The title of the chapter if I recall well is 'representing numbers by decimals'. Best Regards, Simon Plouffe