Cho hàm số \(y = f(x)\) liên tục trên R và có đồ t...
Câu hỏi: Cho hàm số \(y = f(x)\) liên tục trên R và có đồ thị như hình vẽ. Mệnh đề nào đúng:![](data:image/png;base64,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)
A. \(f(x)\) nghịch biến trên khoảng (- 1;1)
B. \(f(x)\) đồng biến trên khoảng (- 2;0)
C. \(f(x)\) nghịch biến trên khoảng \(\left( { - \infty ; - 2} \right)\)
D. \(f(x)\) đồng biến trên khoảng \(\left( {0; + \infty } \right)\)
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi giữa HK1 môn Toán 12 năm 2019 Trường THPT Nam Trực