Assumptions:
TeX:
\operatorname{atan}\!\left(i z\right) = i \operatorname{atanh}(z)
z \in \mathbb{C}Definitions:
| Fungrim symbol | Notation | Short description | 
|---|---|---|
| Atan | Inverse tangent | |
| ConstI | Imaginary unit | |
| CC | Complex numbers | 
Source code for this entry:
Entry(ID("072166"),
    Formula(Equal(Atan(Mul(ConstI, z)), Mul(ConstI, Atanh(z)))),
    Variables(z),
    Assumptions(Element(z, CC)))