Cho hàm số y = f(x) có đồ thị y = f’(x) cắt trục O...
Câu hỏi: Cho hàm số y = f(x) có đồ thị y = f’(x) cắt trục Ox tại ba điểm có hoành độ a < b < c như hình vẽ.![](data:image/png;base64,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)
A. \(f(c) > f(b) > f(a).\)
B. \(f(b) > f(a) > f(c).\)
C. \(f(a) > f(c) > f(b).\)
D. \(f(c) > f(a) > f(b).\)
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi HK2 môn Toán 12 Trường THPT Nguyễn Du - TP. Hồ Chí Minh năm học 2017 - 2018