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If \(f:\{0,1,2,3\}\to\{0,1,4,9\}\) and \(f(x)=x^2\), which of the following ordered pairs does not belong to \(f\)?

Answer and explanation

Correct answer: \((3,6)\)

For an ordered pair \((x,y)\) to belong to the function \(f\), it must satisfy \(y=f(x)=x^2\). Thus, \(f(0)=0\), \(f(1)=1\), and \(f(2)=4\), so options A, B, and C are valid pairs. However, \(f(3)=3^2=9\), not 6; therefore, \((3,6)\) does not belong to \(f\). Exam tip: compare the second component of each pair with the square of its first component.

Related tags

Relations-FunctionsOrdered-PairsFunction-RuleSquare-FunctionFunctions As A Special Kind Of RelationRelations And FunctionsMathematicsClass 11 Mcq

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