https://mathworld.wolfram.com/ImaginaryUnit.html
Imaginary Unit -- from Wolfram MathWorld
The imaginary number i=sqrt(-1), i.e., the square root of -1. The imaginary unit is denoted and commonly referred to as "i." Although there are two possible...
imaginary unitwolframmathworld
https://www.maplesoft.com/support/help/MapleSim/view.aspx?path=NumberTheory%2FImaginaryUnit
Imaginary Unit - Maple Help
NumberTheory ImaginaryUnit modular square root of -1 Calling Sequence Parameters Description Examples Compatibility Calling Sequence ImaginaryUnit( n )...
imaginary unitmaplehelp