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If f R to R is a functin defined by f (x...

If `f R to R` is a functin defined by `f (x) = x ^(2),` then which of the following is true ?

A

f is 1-1 but not onto

B

f is onto but not 1-1

C

f is neither 1-1 nor onto

D

f is both 1-1 and onto

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