Cho hàm số đa thức bậc ba \(y=f(x)\) liên tục trên...
Câu hỏi: Cho hàm số đa thức bậc ba \(y=f(x)\) liên tục trên R và có đồ thị như hình vẽ. Với m là tham số thực bất kì thuộc đoạn [0;2], phương trình \(f\left( {{x^3} - 2{x^2} + 2019x} \right) = {m^2} - 2m + \frac{3}{2}\) có bao nhiêu nghiệm thực phân biệt?![geogebra](data:image/png;base64,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)
A. 2
B. 1
C. 4
D. 3
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi HSG môn Toán 12 năm 2019 cụm Trường Gia Bình - Lương Tài