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+--- Thread: HP Prime Define: Use with solve, etc. (/thread-253725.html)
HP Prime Define: Use with solve, etc. - Helge Gabert - 10-23-2013
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 user-defined function (other than built-in F0,...F9) to work inside CAS commands? Thanks!