Check the injectivity and surjectivity of the following functions: f – InterviewSolution

1.

Check the injectivity and surjectivity of the following functions: f : Z → Z given by f (x) = x3

Answer»

Let x₁, x₂ ∈ Z

f is one-one or injective

Range of f = {0, ±1, ±8, ±27,…………….. } ≠Z

f is not surjective

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