DLMF:3.9.E6 (Q1391)

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Language	Label	Description	Also known as
English	DLMF:3.9.E6	No description defined

Statements

{\displaystyle{\displaystyle\frac{\pi}{4}=1-\frac{1}{3}+\frac{1}{5}-\frac{1}{7% }+\cdots=\frac{1}{2}\left(1+\frac{1!}{1\cdot 3}+\frac{2!}{3\cdot 5}+\frac{3!}{% 3\cdot 5\cdot 7}+\cdots\right).}}

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DLMF:3.9.E6

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{\displaystyle{\displaystyle\pi}}

C3.S12.E1.m2adec

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