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If (f:[0,\infty)\to[0,\infty)), (f(x)=x^2), which statement is correct?

Answer and explanation

Correct answer: Onto and one-one

Step 1: On ([0,\infty)), (x^2) is increasing. Step 2: For any (y\in[0,\infty)), (x=\sqrt{y}) is in the domain, so the function is onto. Different (x) values give different squares, so it is one-one too. Step 3: Changing the domain can change the nature of a function.

Related tags

Relations-FunctionsDomain-RestrictionOnto-FunctionOnto FunctionRelations And FunctionsMathematicsClass 12 Mcq

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