JEE Math Practice Question
Let a function f : (0, $$\infty $$) $$ \to $$ (0, $$\infty $$) be defined by f(x) = $$\left| {1 - {1 \over x}} \right|$$. Then f is :
- A.not injective but it is surjective
- B.neiter injective nor surjective
- C.injective only
- D.both injective as well as surjective
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