• # question_answer If the function $f:R-\{1,-1\}\to A$defined by $f(x)=\frac{{{x}^{2}}}{1-{{x}^{2}}},$is subjective, then A is equal to [JEE Main 9-4-2019 Morning] A) $R-[-1,0)$      B) $R-(-1,0)$C) $R-\{-1\}$                  D) $[0,\infty )$

$y=\frac{{{x}^{2}}}{1-{{x}^{2}}}$ Range of y : R -[-1,0) for surjective funciton, A must be same as above range.