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L e t i f f; R - > R (R i s a s e t o f r e a l n u m b e r) a n d f (x) = X^{2} t h e n -

f^{- 1} (- 3) = - 3

f^{- 1} (- 3) = 3

f^{- 1} (- 3) = 0

f^{- 1 (- 3) =} \emptyset

ANS : 4

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