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If (f:\mathbb{Z}\to\mathbb{Z}) is defined by (f(n)=n^3), which statement about (f) is correct?

Answer and explanation

Correct answer: One-one but not onto

Step 1: On integers, (n^3) is increasing, so different (n) give different values. Step 2: (2) is not the cube of any integer, so not every codomain value is reached. Step 3: For power functions on integers, check the range carefully.

Related tags

Integer FunctionOne-OneNot OntoFunctionsRelations And FunctionsMathematicsClass 12 Mcq

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