I am trying to author a question where the answer contains the signum function. None of sgn(), sign() and signum() are handled in a way I want it to be seen by students.
- sgn() and signum() seem to be unknown and are written in italic in the validation output.
- sign() is converted to pnz.
I wonder if I missed a straightforward option to input sgn(), as this is a quite common function not only for engineers.
Currently, the only workaround seems to use abs(a)/a as a replacement. This is awkward yet displays consistently.