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Which example proves that (f(x)=x^2+1) is not one-one on real numbers?

Answer and explanation

Correct answer: (f(1)=f(-1))

Step 1: To show a function is not one-one, show equal outputs for different inputs. Step 2: (f(1)=2) and (f(-1)=2), while (1\neq-1). Step 3: Finding only one value is not enough; compare two different inputs.

Related tags

One-One-FunctionQuadratic-FunctionCounterexampleOne One FunctionRelations And FunctionsMathematicsClass 12 Mcq

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