کدام گزینه نمایش چندضابطهای تابع $f\left( x \right)=\left| 2x-1 \right|$ میباشد؟
$f\left( x \right)=\left\{ \begin{matrix} 2x-1\,\,\,\,\,\,\,\,\,\,\,\,\,x\ge \frac{1}{2} \\ -2x+1\,\,\,\,\,\,\,\,\,x\lt \frac{1}{2} \\\end{matrix} \right.$
2 )
$f\left( x \right)=\left\{ \begin{matrix} 2x+1\,\,\,\,\,\,\,\,\,\,\,\,\,x\ge \frac{1}{2} \\ -2x+1\,\,\,\,\,\,\,\,\,x\lt \frac{1}{2} \\\end{matrix} \right.$
3 )
$f\left( x \right)=\left\{ \begin{matrix} 2x-1\,\,\,\,\,\,\,\,\,\,\,\,\,x\gt \frac{1}{2} \\ 2x-1\,\,\,\,\,\,\,\,\,x\lt \frac{1}{2} \\\end{matrix} \right.$
4 )
$f\left( x \right)=\left\{ \begin{matrix} 2x-1\,\,\,\,\,\,\,\,\,\,\,\,\,x\ge \frac{1}{2} \\ 2x+1\,\,\,\,\,\,\,\,\,x\lt \frac{1}{2} \\\end{matrix} \right.$