On Sat, Aug 18, 2012 at 9:50 AM, Roger <[email protected]> wrote: >how can they know if the calculation of pi is very precise if they > don't really know beforehand what its precise value should be ? >
But we do know the precise value of pi, 250 years ago Euler proved that pi squared divided by 6 is EXACTLY equal to the infinite series 1+ 1/2 + 1/4 + 1/9 + 1/16 + 1/25 + 1/36 +1/49 +....... Tell me how close to pi you want to get and a finite number of terms in this sequence can help you produce it. John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/everything-list?hl=en.
