A mapping f: N N , where N is the set of natural numbers is defined as f(n)=n^ 2 , for n…

Mathematics · JEE Main · NTA ExamsSets, Relations and Functions

A mapping \(f: N \rightarrow N\), where N is the set of natural numbers is defined as

\(f(n)=n^{2}\),  for n odd

\(f(n)=2 n+1\),  for n even

Then f is

  1. surjective but not injective
  2. injective but not surjective
  3. bijective
  4. neither injective nor surjective

Answer

(D) neither injective nor surjective

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