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If (f:\mathbb{R}\to\mathbb{R}), (f(x)=\begin{cases}x+1,&x\ge 0\x-1,&x<0\end{cases}), which statement is correct about (f)?

Answer and explanation

Correct answer: One-one

Step 1: For (x\ge 0), outputs lie in ([1,\infty)). Step 2: For (x<0), outputs lie in ((-\infty,-1)). The output ranges of the two parts do not overlap. Step 3: If each part is one-one and their output ranges do not clash, the whole piecewise function is one-one.

Related tags

One-One FunctionPiecewise FunctionRange ComparisonOne One FunctionRelations And FunctionsMathematicsClass 12 Mcq

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