Term that refers to either the maximum or the minimum of a function.
Examples
- The function defined by the relationship y = x – 3 does not have a maximum or a minimum.
- The function defined by the relationship y = 2 has an extremum of 2.
- A second-degree polynomial function defined by f(x) = A\({x}^{2}\)+ Bx + C has a minimum if A > 0 and a maximum if A < 0.