Question Number 159010 by SANOGO last updated on 11/Nov/21
$${f}:{N}\rightarrow{N} \\ $$$${n}\rightarrow\left\{_{{n}+\mathrm{1}\:{si}\:{impair}} ^{{n}\:\:{si}\:{paire}} \right. \\ $$$${f}\:{est}−{il}\:{injective},{surj}\:{ou}\:{bijec}\:? \\ $$
Commented by SLVR last updated on 12/Nov/21
$${this}\:{can}\:{be}\:{understood}\:{for}\:{a}\:{few} \\ $$$${but}\:{if}\:{u}\:{type}\:{in}\:{english}... \\ $$$${more}\:{better}..{please} \\ $$