Cho hàm số \(y = a{x^4} + b...
Câu hỏi: Cho hàm số \(y = a{x^4} + b{x^2} + c\) có đồ thị như hình vẽ bên. Mệnh đề nào dưới đây là 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 thử THPT QG 2018 môn Toán - THPT Yên Định 2 Thanh Hóa