Cho hàm số \(y=f(x)\) và có bảng biến thiên trên \...
Câu hỏi: Cho hàm số \(y=f(x)\) và có bảng biến thiên trên \(\left[ { - 5;7} \right)\) như sau:![](data:image/png;base64,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)
A. \(\mathop {\min }\limits_{\left[ { - 5;7} \right)} f\left( x \right) = 2\) và hàm số không đạt giá trị lớn nhất trên [- 5;7).
B. \(\mathop {\max }\limits_{\left[ { - 5;7} \right)} f\left( x \right) = 6\) và \(\mathop {\min }\limits_{\left[ { - 5;7} \right)} f\left( x \right) = 2\)
C. \(\mathop {\max }\limits_{\left[ { - 5;7} \right)} f\left( x \right) =9\) và \(\mathop {\min }\limits_{\left[ { - 5;7} \right)} f\left( x \right) = 2\)
D. \(\mathop {\max}\limits_{\left[ { - 5;7} \right)} f\left( x \right) = 9\) và \(\mathop {\min }\limits_{\left[ { - 5;7} \right)} f\left( x \right) = 6\)
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2019 môn Toán Trường THPT Chuyên Thái Nguyên lần 1