Tuesday, October 12, 2010

John Machin's formula

Found an excellent article on the John Machin formula.


Most people merely list formulas without proof. Thanks to the author of that pdf!

239... is an odd number to be in a formula isn't it.
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1 comment:

Joseph Mak said...

I know how to prove this Euler formula now.

π/4 = atan(1/2) + atan(1/3)

Verify on your calculator (with radian mode)

This is an excellent site.... omg, there is link between π and Fibonacci!

October 15, 2010 at 5:04 PM

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