Tg(2x+π/6)≥-√3
-π/3+πn ≤ 2x+π/6 < π/2+πn, n∈Z
-π/3-π/6+πn ≤ 2x < π/2-π/6+πn, n∈Z
-π/2+πn ≤ 2x < π/3+πn, n∈Z
-π/4+πn/2 ≤ x < π/6 +πn, n∈Z
x∈[-π/4+πn/2 ; <span>π/6 +πn), n∈Z</span>
5 4
6x - ---- = x + -----
4 3
3 4
5 4
6х - х = ----- + ----
4 3
15 + 16
5х = ------------
12
31
5х= ----
12
5х = 6,2
х = 6,2 : 5
х = 1,24
Центр(0;1), а радиус=2
2) Принадлежит только точка (2;1)
3,5,7,9,11,13,15,17,19,21,23,25