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95. Trigonometrik tengsizliklar. Tengsizliklar sistemasi — JAYDARIMOCK
Abituriyent 1-11 to'plami
Trigonometriya
95. Trigonometrik tengsizliklar. Tengsizliklar sistemasi
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1.
O'rtacha
Tengsizlikni yeching:
3
ctg
3
x
+
1
≥
0
A)
[
3
π
k
;
9
π
+
3
π
k
]
,
k
∈
Z
B)
(
−
9
π
+
3
π
k
;
3
π
k
]
,
k
∈
Z
C)
[
9
π
+
3
π
k
;
9
2
π
+
3
π
k
]
,
k
∈
Z
D)
(
3
π
k
;
9
2
π
+
3
π
k
]
,
k
∈
Z
Javobni tekshirish
Yechim tahlili
Oldingi
Keyingi
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