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If (f:\mathbb{R}\to\mathbb{R}) and (f(x)=x^3+x), what is the most accurate type of the function?

Answer and explanation

Correct answer: One-one and onto

Step 1: The expression (x^3+x) increases continuously as (x) increases, so two different inputs cannot give the same value. Step 2: Its values cover all real numbers from very negative to very positive. Step 3: A function that is both one-one and onto is also invertible.

Related tags

FunctionsBijectiveOne-OneOntoRelations And FunctionsMathematicsClass 12 Mcq

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