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If (f:\mathbb{R}\to[0,1]), (f(x)=\frac{x^2}{1+x^2}), then (f) is not onto because

Answer and explanation

Correct answer: (1) is not an image

Step 1: (\frac{x^2}{1+x^2}) is always at least (0) and less than (1). Step 2: At (x=0), we get (0), but (1) is not obtained for any real (x). So the range is ([0,1)), not the codomain ([0,1]). Step 3: Distinguish between a limiting value and an attained value.

Related tags

Relations-FunctionsRational-RangeOnto-FunctionOnto FunctionRelations And FunctionsMathematicsClass 12 Mcq

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