![](data:image/png;base64,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)
Câu 2: Tìm tập xác định của bất phương trình
A.
B.
C.
D.
Câu 3: Giải bất phương trình
.
A.
B.
C.
D.
Câu 4: Giải bất phương trình
.
A.
B.
C.
D.
Câu 5: Tập nghiệm của bất phương trình
là:
A.
B.
C.
D.
Câu 6: Bất phương trình nào dưới đây vô nghiệm:
A.
B.
C.
D.
Câu 7: Cho biểu thức
2
3
1 5
x x
f x x x
, mệnh đề nào dưới đây sai:
A.
0 ;0 1;5f x x
B.
0 0;1 5;f x x
C.
0 0;1 5;f x x
D.
0 ;0 3;f x x
Câu 8: Giải bất phương trình
.
A.
B.
C.
D.
Câu 9: Tìm tất cả các giá trị của
để bất phương trình
2
2 2 1 4 0m x m x
vô nghiệm.
A.
B.
C.
D.
Câu 10: Xác định miền nghiệm của bất phương trình
trên mặt phẳng tọa độ
.
A. Miền nghiệm là nửa mặt phẳng (không kể đường thẳng
) và không chứa O.
B. Miền nghiệm là nửa mặt phẳng (kể cả đường thẳng
) và không chứa gốc O.
C. Miền nghiệm là nửa mặt phẳng (kể cả đường thẳng
) và chứa gốc O.
D. Miền nghiệm là nửa mặt phẳng (không kể đường thẳng
) và chứa gốc O.
Câu 11: Cho tam giác ABC có BC = 8, AB = 5,
. Tính số đo góc A.
A.
B.
C.
D.
Câu 12: Phương trình đường thẳng
đi qua
có vectơ pháp tuyến
là:
A.
B.
C.
D.
Câu 13: Phương trình đường thẳng
qua
và vuông góc với đường thẳng
là: