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If (f:\mathbb{R}\to \mathbb{R}) is defined by (f(x)=\begin{cases}x^2,&x\ge0\-x^2,&x<0\end{cases}), choose the correct statement about (f).

Answer and explanation

Correct answer: Onto

Step 1: For (x\ge0), (x^2) gives all non-negative real values. Step 2: For (x<0), (-x^2) gives all negative real values, and (0) is obtained from the first part. Step 3: For a piecewise function, find the range of each part and then take their union.

Related tags

Relations And FunctionsOnto FunctionPiecewise FunctionMathematicsClass 12 Mcq

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