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If (f:\mathbb{N}\to\mathbb{N}), (f(n)=n^2+n), what is (f)?

Answer and explanation

Correct answer: One-one

Step 1: In natural numbers, as (n) increases, both (n^2) and (n) increase. Step 2: Hence (n^2+n) also increases and different (n) give different images. Step 3: The same formula may behave differently on integers, so read the domain carefully.

Related tags

One-One-FunctionNatural-NumbersDomain-EffectInjectiveOne One FunctionRelations And FunctionsMathematicsClass 12 Mcq

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