Cho hàm số có bản...
Câu hỏi: Cho hàm số có bảng biến thiên sau
![](data:image/png;base64,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)
Trong các khẳng định sau khẳng định nào đúng?
A. Đồ thị hàm số có hai tiệm cận ngang là y=-1, y=1
B. Đồ thị hàm số có hai tiệm cận ngang là x=-1,x=1
C. Đồ thị hàm số không có tiệm cận ngang.
D. Đồ thị hàm số có có tiệm cận đứng.
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