Cho hàm số \(y=f(x)\) liên tục trên R có đồ thị nh...
Câu hỏi: Cho hàm số \(y=f(x)\) liên tục trên R có đồ thị như hình vẽ bên. Phương trình \(f\left( {f\left( x \right) - 1} \right) = 0\) có tất cả bao nhiêu nghiệm thực phân biệt 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)
A. 6
B. 5
C. 7
D. 4
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2019 môn Toán Trường THPT Chuyên Lam Sơn - Thanh Hóa lần 2