Cho hàm số \(y = f\left( x \right) = a{x^4} + b{x^...
Câu hỏi: Cho hàm số \(y = f\left( x \right) = a{x^4} + b{x^2} + c\) xác định và liên tục trên R và có bảng biến thiên sau:![](data:image/png;base64,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)
A. 64
B. 65
C. 66
D. 67
Câu hỏi trên thuộc đề trắc nghiệm
40 câu trắc nghiệm Các dạng toán về hàm ẩn liên quan đến GTLN, GTNN của hàm số