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JEE Mains · Maths · STD 12 - 1. relation and function

यदि एक फलन \(f: N \rightarrow N\) है, जो \(f ( n )=\left[\begin{array}{ll}2 n , & n =2,4,6,8, \ldots . \\ n -1, & n =3,7,11,15, \ldots . \\ \frac{ n +1}{2}, & n =1,5,9,13, \ldots \ldots\end{array} \quad\right.\) द्वारा परिभापित है, तब \(f\) है

  1. A एकैकी परन्तु आच्छादक नहीं
  2. B आच्छादक परन्तु एकैकी नहीं
  3. C ना एकैकी ना ही आच्छादक
  4. D एकैकी और आच्छादक
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(D) एकैकी और आच्छादक

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\(f ( x )=\left\{\begin{array}{ccc}4 R ; n =2 R \\ 4 R -2 ; n =4 R -1 \\ 2 R -1 ; n =4 R -3\end{array}\right.\) \((R \in N)\) \(Note\) that for any element, it will fall into exactly. one of these sets. \(\{y: y=4 R ; y \in N\}\) \(\{y: y=4 R-2 ; y \in N\}\)…
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