Fungrim entry: 622772

\operatorname{erfi}(z) = \frac{2}{\sqrt{\pi}} \int_{0}^{z} {e}^{{t}^{2}} \, dt

Assumptions:

z \in \mathbb{C}

TeX:

\operatorname{erfi}(z) = \frac{2}{\sqrt{\pi}} \int_{0}^{z} {e}^{{t}^{2}} \, dt

z \in \mathbb{C}

Definitions:

Fungrim symbol	Notation	Short description
`Erfi`	$\operatorname{erfi}(z)$	Imaginary error function
`Sqrt`	$\sqrt{z}$	Principal square root
`Pi`	$\pi$	The constant pi (3.14...)
`Integral`	$\int_{a}^{b} f(x) \, dx$	Integral
`Exp`	${e}^{z}$	Exponential function
`Pow`	${a}^{b}$	Power
`CC`	$\mathbb{C}$	Complex numbers

Source code for this entry:

Entry(ID("622772"),
    Formula(Equal(Erfi(z), Mul(Div(2, Sqrt(Pi)), Integral(Exp(Pow(t, 2)), For(t, 0, z))))),
    Variables(z),
    Assumptions(Element(z, CC)))

Topics using this entry

Error functions

Copyright (C) Fredrik Johansson and contributors. Fungrim is provided under the MIT license. The source code is on GitHub.

2021-03-15 19:12:00.328586 UTC