HP Prime without CAS

[Amrlxy19]

(10-23-2020 10:00 PM)pinkman Wrote:  I don’t know what’s authorized but if the CAS is the only forbidden part of the calc, then the numerical tools are available.

My advice would be to use the Function app in combination with the ROOT numerical solver.

Example:
F1:='X^5+X^3-3*X^2-X+2'
Open the plot view to see where are the roots
Then solve numerically:
ROOT(F2,-1) -> −0.805154414085
ROOT(F2,0.5) -> 0.886557206985
ROOT(F2,2) -> 1

Regards.
Thibault

Most of the numerical tools are allowed. If that is the fastest way... well, that sucks...

How do I use the ROOT() for imaginary roots? And also, I read that CAS functions are lowercase such as solve(). So, why POLYROOT() is also disabled when CAS is disabled?

Thanks for your reply and help.