Cho hàm số \(y=f(x)\) liên tục trên [- 2;4] và có...
Câu hỏi: Cho hàm số \(y=f(x)\) liên tục trên [- 2;4] và có bảng biến thiên như sau![](data:image/png;base64,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)
A. 4
B. - 4
C. 2
D. 1
Câu hỏi trên thuộc đề trắc nghiệm
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