Đề bài:
I, Trắc nghiệm khách quan: (2đ) Khoanh tròn vào đáp án đúng trong mỗi câu sau đây:
Câu 1: Bất phương trình tương đương với bất phương trình:
(A) (B) < 0
(C) 0 (D) < 0
Câu 2: Hệ bất phương trình sau vô nghiệm:
(A) (B)
(C) (D)
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Kiểm tra 45p môn đại số 10
Họ và tên:
Lớp:
Đề bài:
I, Trắc nghiệm khách quan: (2đ) Khoanh tròn vào đáp án đúng trong mỗi câu sau đây:
Câu 1: Bất phương trình tương đương với bất phương trình:
(A) (B) < 0
(C) 0 (D) < 0
Câu 2: Hệ bất phương trình sau vô nghiệm:
(A) (B)
(C) (D)
II, Tự luận: ( 8đ )
Bài 1: (2,0 đ ). Biểu diễn tập nghiệm của bất phương trình: x 3y > 0
Bài 2:(4,0 đ )
1) Lập bảng xét dấu của biểu thức: f(x) =
2) Giải bất phương trỡnh
Bài 3: (2,0 đ ) Cho phương trình:
Tìm m = ? để phương trình có 2 nghiệm trái dấu.
Bài làm:
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