1) (n+12)/n= 1+ 12/n
при n= 1, 2, 3, 4, 6, 12
2) (5n-9)/n= 5- 9/n
при n= 1, 3
3) (n²+2n+3)/n= n+ 2+ 3/n
1) (n+12)/n= 1+ 12/n
при n= 1, 2, 3, 4, 6, 12
2) (5n-9)/n= 5- 9/n
при n= 1, 3
3) (n²+2n+3)/n= n+ 2+ 3/n
при n= 1, 3