Cho hàm số \(y = f\left( x \right)\) xác định, liê...
Câu hỏi: Cho hàm số \(y = f\left( x \right)\) xác định, liên tục trên \(\mathbb{R}\) và có đạo hàm \(f'\left( x \right)\). Biết rằng hàm số \(f'\left( x \right)\)có đồ thị như hình vẽ bên dưới. Mệnh đề nào sau đây đúng![](data:image/png;base64,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)
A Hàm số \(y = f\left( x \right)\) đồng biến trên khoảng \(( - 2;0)\)
B Hàm số \(y = f\left( x \right)\) nghịch biến trên khoảng \(\left( {0; + \infty } \right)\)
C Hàm số \(y = f\left( x \right)\) đồng biến trên khoảng \(\left( { - \infty ; - 3} \right)\)
D Hàm số \(y = f\left( x \right)\) nghịch biến trên khoảng \(\left( { - 3; - 2} \right)\) .
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG môn Toán năm 2019 - Thầy Chí - Đề số 15