DLMF:4.19.E6 (Q1685)

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Language	Label	Description	Also known as
English	DLMF:4.19.E6	No description defined

Statements

Defining formula

{\displaystyle{\displaystyle\cot z=\frac{1}{z}-\frac{z}{3}-\frac{z^{3}}{45}-% \frac{2}{945}z^{5}-\cdots-\frac{(-1)^{n-1}2^{2n}B_{2n}}{(2n)!}z^{2n-1}-\cdots,}}

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DLMF:4.19.E6

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{\displaystyle{\displaystyle 0<|z|<\pi}}

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Defining formula

{\displaystyle{\displaystyle B_{\NVar{n}}}}

C24.S2.SS1.m1abdec

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the ratio of the circumference of a circle to its diameter

Defining formula

{\displaystyle{\displaystyle\pi}}

C3.S12.E1.m2acdec

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Sitelinks

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