题目
题型:单选题难度:一般来源:不详
A.(﹣∞,1] | B. |
C. | D.(1,2) |
答案
解析
∴f(x)=
根据复合函数的单调性我们易得
在区间(﹣∞,1]上单调递减
在区间(1,2)上单调递增
故选D
核心考点
举一反三
A.0 | B.1 | C.2 | D.3 |
A.0 | B.1 | C.2 | D.3 |
A. | B. | C. | D. |
A. | B. | C. | D. |
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