Cho hàm số y = f(x) có đồ thị như hình vẽ bên. Hàm...
Câu hỏi: Cho hàm số y = f(x) có đồ thị như hình vẽ bên. Hàm số đã cho đồng biến trên khoảng nào dưới đây?![](data:image/png;base64,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)
A. \(\left( { - 1; + \infty } \right)\)
B. \(\left( {0; + \infty } \right)\)
C. (-2;0)
D. \(\left( { - 4; + \infty } \right)\)
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG môn Toán năm 2019 Trường THPT Kim Liên- Hà Nội