\[f(x) = \left\{ \begin{matrix} - x^{2};\ \ - 3 \leq x \leq 2 \\ 2x - 4;\ \ \ \ \ \ \ \ \ x > 2 \\ \end{matrix} \right.\ \]
\[ООФ:\ \ \ D(f) = \lbrack - 3; + \infty).\]