Re: Can we find the function?

On Oct 31, 1:55 pm, David W. Cantrell <DWCantr...@xxxxxxxxxxx> wrote:
polymedes <polyme...@xxxxxxxxx> wrote:
Let (f o f)(x) = -2x + 3

Can we find the original function f ?

How about f(x) = Sqrt(-2) x + 1 - Sqrt(-2) ?

(Of course, I'm not saying that is the only such function.)

David

Can we answer this question instead: Is it possible for the
composition of two non-polynomial functions, to be a polynomial
function?

.