DLMF:3.12.E2
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Math Formula Information
Formula: Failed to parse (unknown function "\cpi"): {\displaystyle \cpi=4\int_{0}^{1}\frac{\diff{t}}{1+t^{2}}.}
Name: DLMF:3.12.E2
Description:
Data Source
https://lct.wmflabs.org/w/index.php?title=Special:EntityPage/Q1494