Wallis Formula


	The slowly convergent Wallis formula for follows from the infinite product representation for , when At each step, the outermost green segment represents the cumulative value of the product and the yellow segment represents the error relative to


	Contributed by: Michael Schreiber

Wallis Formula (Wolfram MathWorld)

"Wallis Formula" from The Wolfram Demonstrations Project
http://demonstrations.wolfram.com/WallisFormula/

Contributed by: Michael Schreiber

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