Formula:2949

Digital Library of Mathematical Functions ID 6.6.E4

${\displaystyle{\displaystyle\mathrm{Ein}\left(z\right)=\sum_{n=1}^{\infty}\frac{(-1)^{n-1}z^{n}}{n!\thinspace n},}}$

Symbols List

• ${\displaystyle{\displaystyle\mathrm{Ein}\left(\NVar{z}\right)}}$: complementary exponential integral
• ${\displaystyle{\displaystyle!}}$:
• ${\displaystyle{\displaystyle z}}$: complex variable
• ${\displaystyle{\displaystyle n}}$: nonnegative integer
 

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