پیوستگی تابع زیر را در نقطه $x = 2$ بررسی کنید.
$f(x) = \left\{ \begin{gathered}
2x - 9\,\,\,\,\,\,\,\,\,\,\,\,x \gt 2 \hfill \\
- 5\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x = 2 \hfill \\
- 2{x^2} + 3\,\,\,\,\,\,x \lt 2 \hfill \\
\end{gathered} \right.$