Proof that 22/7 exceeds π
Proofs of the famous mathematical result that the rational number 227 is greater than π (pi) date back to antiquity. One of these proofs, more recently developed but requiring only elementary techniques from calculus, has attracted attention in modern mathematics due to its mathematical elegance and its connections to the theory of diophantine approximations. Stephen Lucas calls this proof “one of the more beautiful results related to approximating π”.[1] Julian Havil ends a discussion of continued fraction approximations of π with the result, describing it as “impossible to resist mentioning” in that context.[2]
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