Cho hàm số \(y=f(x)\) liên tục trên R và có đồ thị...
Câu hỏi: Cho hàm số \(y=f(x)\) liên tục trên R và có đồ thị như hình bên. Số nghiệm phân biệt của phương trình \(f\left( {f(x)} \right) = 1\) là![](data:image/png;base64,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)
A. 7
B. 8
C. 9
D. 6
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2019 môn Toán Trường THPT Hoàng Văn Thụ