3 Let fi n 2n 4n 3 f2 n 2n 4n 3 and f3 n 2n 3n 4 be three

Last updated: 2/9/2024

3 Let fi n 2n 4n 3 f2 n 2n 4n 3 and f3 n 2n 3n 4 be three functions defined on Z Which two of them are injective Please explain precisely why and why the third one is not injective