| \(x\) | \({f(x)} \) | \({f(x)} \) | |
|---|---|---|---|
| \(0\) | \(2\cdot 0-1\) | \(-1\) | \(\longleftarrow\) absolute minimum value |
| \(2\) | \(2\cdot 2-1\) | \(3\) | \(\longleftarrow\) absolute maximum value |
| \(\dfrac{5}{2}\) | \(\left( \dfrac{5}{2}\right) ^{\!\!2}-5\left( \dfrac{5}{2}\right) +9=\dfrac{25}{4}-\dfrac{25}{2}+9\) | \(\dfrac{11}{4}\) | |
| \(3\) | \(3^{2}-5\cdot 3+9=9-15+9\) | \(3\) | \(\longleftarrow\) absolute maximum value |