Cho hàm số \(f\left( x \right) = a{x^4} + b{x^3} +...
Câu hỏi: Cho hàm số \(f\left( x \right) = a{x^4} + b{x^3} + c{x^3} + dx + e\left( {a \ne 0} \right)\). Biết rằng hàm số f(x) có đạo hàm là f'(x) và hàm số y = f'(x) có đồ thị như hình vẽ dưới. Khi đó mệnh đề nào sau đây sai?![](data:image/png;base64,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)
A. Hàm số f(x) nghịch biến trên khoảng (-1;1)
B. Hàm số f(x) đồng biến trên khoảng \(\left( {0; + \infty } \right)\)
C. Hàm số f(x) đồng biến trên khoảng (-2;1)
D. Hàm số f(x) nghịch biến trên khoảng \(\left( { - \infty ; - 2} \right)\)
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2019 môn Toán lần 1 Trường THPT Ngô Quyền - Hải Phòng