Cho hàm số bậc ba \(y=f(x)\) liên tục trên R và có...
Câu hỏi: Cho hàm số bậc ba \(y=f(x)\) liên tục trên R và có đồ thị như hình vẽ.![](data:image/png;base64,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)
A. 5
B. 3
C. 2
D. 4
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