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At which point does the graph of the function \(y=\max(x,3)\) have its corner?

Answer and explanation

Correct answer: \((3,3)\)

The function can be written as \(y=3\) for \(x\leq 3\) and \(y=x\) for \(x\geq 3\). These two lines meet at \(x=3\), where \(y=3\), so the corner is at \((3,3)\). The point \((0,3)\) lies on the horizontal part but is not a point where the slope changes. Exam tip: the graph of \(\max(x,a)\) has its corner at \((a,a)\).

Related tags

GraphsPiecewise FunctionsMaximum FunctionStandard FunctionsRelations And FunctionsGraphs Of Standard FunctionsMathematicsClass 11 Mcq

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