Cho hàm số y = f(x) có bảng biến thiên như sau:
Câu hỏi: Cho hàm số y = f(x) có bảng biến thiên như sau:![](data:image/png;base64,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)
A. 0
B. -4
C. 1
D. -3
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG môn Toán năm 2019 Trường THPT Kim Liên- Hà NộiA. 0
B. -4
C. 1
D. -3
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG môn Toán năm 2019 Trường THPT Kim Liên- Hà Nội