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What is the range of the relation \(R=\{(x,y): y=x^2,\ x\in\{-2,-1,0,1,2\}\}\)?

Answer and explanation

Correct answer: \(\{0,1,4\}\)

For each given value of \(x\), calculating \(y=x^2\) gives \(4,1,0,1,4\). The range contains only distinct \(y\)-values, so it is \(\{0,1,4\}\). Option B is the set of given \(x\)-values, which is the domain, not the range. Exam tip: Apply the rule to every domain value and list repeated output values only once.

Related tags

RelationsRangeDomainReal Valued FunctionsTheir Domain And RangeReal Valued Functions Their Domain And RangeRelations And FunctionsMathematicsClass 11 Mcq

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