Ответ:
\[y = 0,5x^{2}\]
| \[x\] | \[0\] | \[1\] | \[2\] | \[- 1\] | \[- 2\] |
|---|---|---|---|---|---|
| \[y\] | \[0\] | \[0,5\] | \[2\] | \[0,5\] | \[2\] |

\[\lbrack 1;2\rbrack\ \]
\[y_{\min} = 0\]
\[y_{\max} = 2.\]
\[y = 0,5x^{2}\]
| \[x\] | \[0\] | \[1\] | \[2\] | \[- 1\] | \[- 2\] |
|---|---|---|---|---|---|
| \[y\] | \[0\] | \[0,5\] | \[2\] | \[0,5\] | \[2\] |

\[\lbrack 1;2\rbrack\ \]
\[y_{\min} = 0\]
\[y_{\max} = 2.\]