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What is the correct statement for (f:\mathbb{R}\to\mathbb{R}), (f(x)=\frac{x}{1+|x|})?

Answer and explanation

Correct answer: It is one-one

Step 1: For (x\geq0), (f(x)=\frac{x}{1+x}), which is increasing. Step 2: For (x<0), (f(x)=\frac{x}{1-x}), which is also increasing and gives negative images. Step 3: The two pieces have separated ranges and each piece is one-one, so the function is one-one.

Related tags

One-One-FunctionAbsolute-ValueRational-FunctionInjectiveOne One FunctionRelations And FunctionsMathematicsClass 12 Mcq

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