HP Prime Define: Use with solve, etc. Message #1 Posted by Helge Gabert on 23 Oct 2013, 6:24 p.m.
Here is a question:
If I define a function in "Function" App, I can use that within solve() in CAS view; no problem.
e.g., solve(F2(x)=0,x) returns the solution
If F2(X)=COSH(X)+9 returns {LN(4*sqrt(5)+9 , . . . }
However, if I define a function with "Define", it doesn't work.
e.g., solve(MYFUNC(x or X or 'X' or " 'X' ")=0,x (or variants)) returns {}.
So how do I get a userdefined function (other than builtin F0,...F9) to work inside CAS commands? Thanks!
