Last Updated
：2025/12/05
Wallis product
（ canonical ）
Quizzes for review
(mathematics) An infinite product that approximates half of pi: 𝜋/2=∏ₙ₌₁ ᪲(4n²)/(4n²-1)=∏ₙ₌₁ ᪲((2n)/(2n-1)·(2n)/(2n+1))[6pt]= Big (2/1·2/3 Big )· Big (4/3·4/5 Big )· Big (6/5·6/7 Big )· Big (8/7·8/9 Big )·;⋯.
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Wallis product
Many students struggle to understand how the Wallis product yields π/2, but a step-by-step derivation makes it clear.
See correct answer
Many students struggle to understand how the Wallis product yields π/2, but a step-by-step derivation makes it clear.
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