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On which interval will (f:\mathbb{R}\to\mathbb{R}), (f(x)=x^2-8x+13), not be one-one?

Answer and explanation

Correct answer: \([2,6]\) / ([2,6])

Step 1: (f(x)=(x-4)^2-3), so the vertex is at (x=4). Step 2: The interval ([2,6]) contains points (2) and (6), equally distant from the vertex, giving equal values. Step 3: If an interval extends on both sides of the vertex, a quadratic is not one-one there.

Related tags

QuadraticNot One-OneIntervalVertex SymmetryOne One FunctionRelations And FunctionsMathematicsClass 12 Mcq

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