Question: If the function $f: \mathrm{R}-\{1,-1\} \rightarrow \mathrm{A}$ defined by
$f(\mathrm{x})=\frac{\mathrm{x}^{2}}{1-\mathrm{x}^{2}}$, is surjective, then $\mathrm{A}$ is equal to
$\mathrm{R}-[-1,0)$
$\mathrm{R}-(-1,0)$
$R-\{-1\}$
$[0, \infty)$
Correct Option: 1
Solution:
