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Let I be the set of integer and f : I `rarr` I be defined as f(x) = `x^(2), x in I`, the function isA. bijectionB. injectionC. surjectionD. None of these |
Answer» Correct Answer - D `f(x) = x^(2), x in Z` f(1) = 1 f(-1) = 1 `therefore` f is not one-one Range of f is set of whole number. Which is a subset of Z. `therefore` f is not onto. |
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