Дана функция f(x)=-2; x^2-3; 2x-3. Найдите: f(3).

\[f(x) = \left\{ \begin{matrix} - 2,\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x < - 1 \\ x² - 3,\ \ - 1 \leq x < 2 \\ 2x - 3,\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x \geq 2 \\ \end{matrix} \right.\ \]

\[f(3) = 6 - 3 = 3.\]