Cho hàm số \(f(x)\) với bảng biến thiên dưới đây:
Câu hỏi: Cho hàm số \(f(x)\) với bảng biến thiên dưới đây:![](data:image/png;base64,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)
A. 5
B. 3
C. 1
D. 7
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2019 môn Toán Trường THPT Chuyên KHTN Hà Nội lần 2A. 5
B. 3
C. 1
D. 7
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2019 môn Toán Trường THPT Chuyên KHTN Hà Nội lần 2