Re: [math-fun] cos(x) = x question

25 Aug 2014

      Yes, these examples are easy to make, like this one :

             infinity
              -----
               \      /       1304        \
                )     |-------------------|
               /      |   2               |
              -----   \4 n  - 4 n + 106277/
              n = 1

is equal to Pi at 443 digits,

if you see the pattern then you can push the approximation
to billions of digits.

Best regards,

Simon Plouffe