Ответ:
\[y = \sqrt{x} - 2;\ \ \ \ x \geq 0\]
| \[x\] | \[0\] | \[1\] | \[4\] | \[9\] |
|---|---|---|---|---|
| \[y\] | \[- 2\] | \[- 1\] | \[0\] | \[1\] |
\[E(y) = \lbrack - 2; + \infty).\]

\[y = \sqrt{x} - 2;\ \ \ \ x \geq 0\]
| \[x\] | \[0\] | \[1\] | \[4\] | \[9\] |
|---|---|---|---|---|
| \[y\] | \[- 2\] | \[- 1\] | \[0\] | \[1\] |
\[E(y) = \lbrack - 2; + \infty).\]
