Problem with solve().

[Han]

(12-24-2013 09:32 AM)John P Wrote:  I think there is a problem with solve() in HP Prime. In Home and in CAS when I enter solve(1,x) or solve(1,X) I get [[]], empty matrix, but when I do solve(0,x) or solve(0,X) I get {x} or{X} as a solution. I think in both cases should be empty matrix or empty list.
Thanks.

Actually, the second case seems fine. If a function is identically zero, then solution set would be the entire domain of that function. The problem is that the domain is ambiguous so returning the input variable is an acceptable way (to me) of presenting the solution.