a)
(2x+3)/8 => 2x+3<8 => 2x<5 => x<5/2 <=> x<2,5
x ∈ N => x ∈ {0,1,2,3,4,5...} (1)
x ∈ (-∞, 2,5) (2)
Din (1) si (2) => x ∈ {0,1,2}
(2x+3)/8:
Daca x=0 => 3/8 = 0,375
Daca x=1 => 5/8 = 0,625
Daca x=2 => 7/8 = 0,825
b)
(3x+2)/6 => 3x+2>6 => 3x>4 => x>4/3
x ∈ N => x ∈ {0,1,2,3,4,5...} (1)
x ∈ (4/3, ∞) (2)
Din (1) si (2) => x ∈ {2,3,4,5,6,...}
Exemple:
1) Daca x=2 => 8/6
2) Daca x=3 => 11/6
3) Daca x=4 => 14/6