Cho đồ thị hàm số \(y = a{x^2} + bx + c\) có đồ th...
Câu hỏi: Cho đồ thị hàm số \(y = a{x^2} + bx + c\) 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 thi KSCL giữa HK1 môn Toán 10 năm 2019 Trường THPT Nhữ Văn Lan