Does elisp support imaginary numbers is any way? I'm trying to follow an online math course with lisp interaction mode buffer running. Are there "higher math" modules/libraries for Emacs elisp?
Emacs includes calc, a comprehensive calculator which supports complex numbers.
The manual is here:
C-hig (calc) RET
Other nodes of particular note are:
(calc) Complex Numbers(calc) Complex Number Functions(calc) Calling Calc from Your Programs