There’s no elementary formula for the circumference of an ellipse, but there is an elementary approximation that is extremely accurate.
An ellipse has...
0 replies - 1026 views - 05/08/13 by John Cook in Articles
G. H. Hardy called the following equation Ramanujan’s “most beautiful identity.” For |q| < 1,
If I understood it, I might say it’s beautiful, but...
1 replies - 3020 views - 10/29/12 by John Cook in Articles
