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. 4
B. 1
C. 2
D. 3
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2019 môn Toán Trường THPT Chuyên Nguyễn Quang DiệuA. 4
B. 1
C. 2
D. 3
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2019 môn Toán Trường THPT Chuyên Nguyễn Quang Diệu