Bảng biến thiên sau là của hàm số nào?
Câu hỏi: Bảng biến thiên sau là của hàm số nào?![](data:image/png;base64,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)
A \(y = \frac{{2x + 4}}{{ - x + 1}}\)
B \(y = - {x^3} + 3{x^2} + 3x + 2.\)
C \(y = \frac{{ - 2x - 4}}{{x + 1}}\)
D \(y = \frac{{ - 2x - 4}}{{x - 1}}\)
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG môn Toán THPT Trần Phú - Hải Phòng - Lần 1 - Năm 2019 - Có lời giải chi tiết