DLMF:8.19.E8 (Q2694)

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Language	Label	Description	Also known as
English	DLMF:8.19.E8	No description defined

Statements

Defining formula

{\displaystyle{\displaystyle E_{n}\left(z\right)=\frac{(-z)^{n-1}}{(n-1)!}(% \psi\left(n\right)-\ln z)-\sum_{\begin{subarray}{c}k=0\\ k\neq n-1\end{subarray}}^{\infty}\frac{(-z)^{k}}{k!(1-n+k)},}}

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DLMF:8.19.E8

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psi (or digamma) function

Defining formula

{\displaystyle{\displaystyle\psi\left(\NVar{z}\right)}}

C5.S2.E2.m2adec

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generalized exponential integral

Defining formula

{\displaystyle{\displaystyle E_{\NVar{p}}\left(\NVar{z}\right)}}

C8.S19.E1.m2aldec

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Defining formula

{\displaystyle{\displaystyle!}}

introduction.Sx4.p1.t1.r15.m5aadec

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principal branch of logarithm function

Defining formula

{\displaystyle{\displaystyle\ln\NVar{z}}}

C4.S2.E2.m2adec

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Defining formula

{\displaystyle{\displaystyle z}}

C8.S1.XMD2.m1fdec

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Defining formula

{\displaystyle{\displaystyle k}}

C8.S1.XMD5.m1adec

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Defining formula

{\displaystyle{\displaystyle n}}

C8.S1.XMD6.m1adec

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Sitelinks

Wikipedia(0 entries)

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