已知
.
(1)求
的周期及在
上的单调递减区间;
(2)求
在
的值域及取最值时的x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80db909026f57dd28f814e5bee9ad970.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c1c1c885e28ef61bf47d1a61a847bb.png)
更新时间:2023-01-14 07:28:17
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