Cho hàm số \(y=ax^2+bx+c\) có đồ thị như hình vẽ b...
Câu hỏi: Cho hàm số \(y=ax^2+bx+c\) có đồ thị như hình vẽ bên dưới. Mệnh đề nào sau đây đúng?![](data:image/png;base64,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)
A. a < 0, b < 0, c < 0
B. a < 0, b = 0, c < 0
C. a > 0, b > 0, c < 0
D. a < 0, b > 0, c < 0
Câu hỏi trên thuộc đề trắc nghiệm
Đề kiểm tra 1 tiết Chương 2 Đại số 10 năm học 2019 - 2020 Trường THPT Triệu Quang Phục