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Evaluating the probability integral using Wallis’s product formula for $π$. (English)
Am. Math. Mon. 116, No. 6, 538-541 (2009).
Summary: $\dots$ or how the square root of Wallis’s product formula for $π$ is the probability integral in disguise. To prove this only basic one-variable calculus is used.
Classification: K65 I35
Keywords: proofs
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