Hi, I created a program based on polynomials. Initially whenever I used solve the CAS would throw out a series of solutions. All well here. i am trying to do a demo with a few colleagues and all the sudden I start getting empty brackets instead of values for the exact same problem.
I was thinking it could be my calculator was in exam mode but it was not the case.
Is your program in a source file from the program catalog?
If so, type or run the command "restart()" in the CAS screen. That will wipe all cas variables and set defaults. Then open your program source file again, and then close it.. Try your program again. Hopefully that will resolve it.
I'd recommend you post it here though, there is probably an issue in your program or it leaves some variables around that can mess things up.
Although I work for the HP calculator group as a head developer of the HP Prime, the views and opinions I post here are my own.