Hàm số có bảng xét dấu đạo hàm được cho ở hình bên...
Câu hỏi: Hàm số có bảng xét dấu đạo hàm được cho ở hình bên. Hỏi hàm số đã cho có bao nhiêu điểm cực trị ?![](data:image/png;base64,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)
A. 2
B. 1
C. 3
D. 4
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2019 môn Toán Sở GD & ĐT Hà Tĩnh