اگر $f\left( x \right)={{x}^{2}}-2x+3$ با دامنه $x\ge 1$ باشد ضابطه ${{f}^{-1}}\left( x \right)$ کدام است؟
1 )
$1-\sqrt{x-2}\,\,\,\,\,\,;\,\,\,\,\,\,x\ge 2$
$1+\sqrt{x-2}\,\,\,\,\,\,;\,\,\,\,\,\,x\ge 2$
3 )
$1+\sqrt{x-2}\,\,\,\,\,\,;\,\,\,\,\,\,x\ge 3$
4 )
$1-\sqrt{x-2}\,\,\,\,\,\,;\,\,\,\,\,\,x\ge 3$