\[1)\ y = \left\{ \begin{matrix} 2x - x^{2}\ при\ x \leq 1 \\ 2 - x\ \ \ \ \ при\ x > 1 \\ \end{matrix} \right.\ \]
\[y = 2x - x^{2} - уравнение\ \]
\[параболы:\]
\[x_{0} = - \frac{b}{2a} = - \frac{2}{2 \bullet ( - 1)} = \frac{2}{2} = 1;\]
\[y_{0} = 2 \bullet 1 - 1^{2} = 2 - 1 = 1.\]
\[y = 2 - x - уравнение\ прямой.\]
\[Ответ:\ \ нет.\]
\[2)\ y = \left\{ \begin{matrix} x^{2} + 2x + 2\ при\ x < 1 \\ \sqrt{x}\text{\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ }при\ x \geq 1 \\ \end{matrix} \right.\ \]
\[y = 2x^{2} + 2x + 2 - уравнение\ \]
\[параболы:\]
\[x_{0} = - \frac{b}{2a} = - \frac{2}{2 \bullet 1} = - \frac{2}{2} = - 1;\]
\[y_{0} = ( - 1)^{2} + 2 \bullet ( - 1) + 2 = 1.\]
\[y = \sqrt{x} - ветвь\ параболы:\]
\[x_{0} = 0;\ \ \ y_{0} = 0.\]
\[Ответ:\ \ нет.\]