Anyone here know how to use the EQN mode on the casio fx-115es plus to find solutions to a system of equations involving complex numbers? Also, if that's not possible, what about entering complex numbers to a matrix on this calculator? I haven't been able to figure it out, and searching the web hasn't returned any relevant results.
I'm guessing its possible as this calculator is allowed on the engineering FE exams. So far I've only been able to solve systems using real numbers in EQN mode, and have only been able to perform complex calculations in CMPLX mode.