Yet another pandigital approximation (just for fun)

[Gerson W. Barbosa]

(07-18-2014 05:56 AM)Massimo Gnerucci Wrote:  

(07-18-2014 05:19 AM)Gerson W. Barbosa Wrote:  Ten digits yielding only nine correct digits of pi.
Same with this previous attempt:



Luckily enough their average gives twelve correct digits :-)

3.141592653588141...

Wow, this is so much nicer!
3.141592654571540303409367866518360732739326280463671619184479...

Perhaps (e^-3)^4 would be better than e^(-3*4), but I'm not sure whether the expression would look nicer in the equation editor.