شکل مقابل مربوط به کدام تابع قطعهای است؟
1 )
$f(x)=\left\{ \begin{matrix}
-{{x}^{2}}+2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,-2\lt x\le 2 \\
x+2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x\gt 2 \\
\end{matrix} \right.\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,$
2 )
$f(x)=\left\{ \begin{matrix}
-{{x}^{2}}-2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,-2\lt x\le 2 \\
x+2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x>2 \\
\end{matrix} \right.\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,$
$f(x)=\left\{ \begin{matrix}
-{{x}^{2}}+2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,-2\le x\le 2 \\
x-2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x\gt 2 \\
\end{matrix} \right.\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,$
4 )
$f(x)=\left\{ \begin{matrix}
-{{x}^{2}}-2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,-2\lt x\le 2 \\
x-2\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x\gt 2 \\
\end{matrix} \right.\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,$
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