$f(x) = x^2 - 1$, for $x \in \reals$
Terms
| Term | This example | Why |
|---|---|---|
| polynomial function | ✓ | $f(x) = x^2 - 1$ for $x \in \reals$ is a polynomial function because it evaluates a polynomial at each real number. |
| function | ✓ | |
| polynomial equation | ✗ | $f(x) = x^2 - 1$ is not a polynomial equation, because its equals sign defines $f$ instead of posing an equation to be solved. |