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If the function f: R -{1,-1} to A defind...

If the function `f: R -{1,-1} to A` definded by `f(x)=(x^(2))/(1-x^(2))`, is surjective, then A is equal to

A

R-{-1}

B

`[0, oo)`

C

R-[-1,0)

D

R-(-1,0)

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The correct Answer is:
C
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