Cho hàm số \(f\left( x \right) = a{x^4} + 2b{x^3}...
Câu hỏi: Cho hàm số \(f\left( x \right) = a{x^4} + 2b{x^3} - 3c{x^2} - 4dx + 5h\,\,\left( {a,\,\,b,\,\,c,\,\,d,\,\,h \in \mathbb{Z}} \right)\). Hàm số \(y = f'\left( x \right)\) có đồ thị như hình vẽ bên. Tập nghiệm thực của phương trình \(f\left( x \right) = 5h\) có số phần tử bằng:![](data:image/jpeg;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 THPT Kim Liên - Hà Nội - Lần 1 - Năm 2019 - Có lời giải chi tiết