Răspuns:
Explicație pas cu pas:
2 <= (3n+2)/9 < 3
18 <= 3n +2 < 27
16 <= 3n < 25
16/3 <= n <25/3, 6<= n <= 8
2 <= 32/(2n +1) < 3
2(2n +1) <= 32 < 3(2n +1)
4n +2 <=32 si 32 < 6n +3
4n <= 30 si 29 < 6n
n <= 30/4, n <= 7
29 < 6n, 29/6 < n, 5 < n , 6 <= n
2 <= (3n+2)/9 < 3 pt. n = 6, 7, 8
2 <= 32/(2n +1) < 3 pt n = 6, 7
In final n = 6, 7
