已知定义域为R的偶函数
在
上单调递减,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2edd8edcb21bd41584daf9bb95a5c7.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2024-05-23 10:14:54
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【知识点】 用导数判断或证明已知函数的单调性
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