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Let R be the set of real numbers. If f:R...

Let `R` be the set of real numbers. If `f:R->R` is a function defined by `f(x)=x^2,` then `f` is injective but not surjective surjective but not injective bijective none of these (a) injective but not surjective (b) surjective but not injective (c) bijective (d) non of these

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