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Which statement is correct about (f:\mathbb{R}\to\mathbb{R}), (f(x)=x^3-6x^2+12x+1)?

Answer and explanation

Correct answer: It is bijective

Step 1: We can write (x^3-6x^2+12x+1=(x-2)^3+9). Step 2: The cubic expression ((x-2)^3) is strictly increasing, so distinct inputs give distinct outputs and every real value is attained. Step 3: In exams, convert such polynomials into shifted cubic form to identify one-one and onto properties quickly.

Related tags

FunctionsBijectionCubic TransformationExpertRelations And FunctionsMathematicsClass 12 Mcq

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