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
Correct Option: 1
Solution:
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