Cho hàm số \(f\left( x \right) = a{x^4} + 2b{x^3}...
Câu hỏi: Cho hàm số \(f\left( x \right) = a{x^4} + 2b{x^3} - 3c{x^2} - 4dx + 5h,\left( {a,b,c,d,h \in Z} \right)\). Hàm số y = f’(x) có đồ thị như hình vẽ bên. Tập nghiệm thực của phương trình f(x) = 5h có số phần tử bằng:![](data:image/png;base64,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)
A. 3
B. 4
C. 2
D. 1
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG môn Toán năm 2019 Trường THPT Kim Liên- Hà Nội