Cho hàm số \(y=f(x)\) liên tục trên R và có bảng b...
Câu hỏi: Cho hàm số \(y=f(x)\) liên tục trên R và có bảng biến thiên như sau:![](data:image/png;base64,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)
A. 3
B. 5
C. 4
D. 2
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