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If (f:\mathbb{R}\to[0,1]), where (f(x)=\frac{1}{1+e^{-x}}), what is the correct conclusion?

Answer and explanation

Correct answer: It is not onto because (0) and (1) are not attained

Step 1: The function values lie between (0) and (1). Step 2: Neither (0) nor (1) is attained for any real (x), but both are in the codomain. Step 3: The difference between open and closed intervals is crucial in onto questions.

Related tags

Range EndpointNot OntoLogistic FunctionReflexive RelationRelations And FunctionsMathematicsClass 12 Mcq

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