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If \(f:A\to B\) is a function, what is the image of \(x\in A\)?

Answer and explanation

Correct answer: \(f(x)\), which lies in \(B\)

For a function \(f:A\to B\), each element \(x\) of the domain \(A\) has a unique output \(f(x)\); this output is the image of \(x\) and lies in the codomain \(B\). Option B represents the input or preimage, while option D is the ordered pair used to describe a point on the graph. Exam tip: the image is obtained by applying the function to the input, giving \(f(x)\).

Related tags

Relations And FunctionsImagesDomain And CodomainFunction TerminologyFunctions As A Special Kind Of RelationMathematicsClass 11 Mcq

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