TeX:
\operatorname{Im}\!\left(\psi\!\left(i\right)\right) = \frac{1}{2} \left(\pi \coth(\pi) + 1\right)Definitions:
| Fungrim symbol | Notation | Short description |
|---|---|---|
| Im | Imaginary part | |
| DigammaFunction | Digamma function | |
| ConstI | Imaginary unit | |
| Pi | The constant pi (3.14...) |
Source code for this entry:
Entry(ID("3ac0ce"),
Formula(Equal(Im(DigammaFunction(ConstI)), Mul(Div(1, 2), Add(Mul(Pi, Coth(Pi)), 1)))))