Biết đồ thị (C) ở hình bên là đồ thị hàm số
Câu hỏi: Biết đồ thị (C) ở hình bên là đồ thị hàm số \(y = {a^x}\left( {a > 0,a \ne 1} \right).\) Gọi (C’) là đường đối xứng với (C) qua đường thẳng
![](data:image/png;base64,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)
Hỏi (C’) là đồ thị của hàm số nào dưới đây?
A. \(y = {\log _{\frac{1}{2}}}x.\)
B. \(y = {2^x}.\)
C. \(y = {\left( {\frac{1}{2}} \right)^x}.\)
D. \(y = {\log _2}x.\)
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG môn Toán Chuyên Thái Bình 2018