已知定义在R上的函数
不是常值函数,且同时满足:①
;②对任意
,均存在
使得
成立;则函数
=__________ .(写出一个符合条件的答案即可)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3b657ebd1733b4f19dcbec44919924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec80634a6e2b2c85f845fa368b3a5969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ba8542fbe02e78cf3948c9abea9855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc8fc27bfc199267a9e1c5355e2e7b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
2022·重庆沙坪坝·模拟预测 查看更多[2]
更新时间:2022-05-03 23:54:15
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解题方法
【推荐1】请写出一个定义在R上的函数,其图象关于y轴对称,无最小值,且最大值为2.其解析式可以为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
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【推荐2】设
是定义在
上的奇函数,且在区间
上单调递增,若
,三角形的内角
满足
,则
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ffa257f460e4ac09d2c68954d5c824d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d8dfda35f1dc37e92b20d67219aa91e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb7320a77f950bca95818736b964a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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解题方法
【推荐1】已知
,数列
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27777314e1d5e914bf01c574ee026e60.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ed663beaa89104f5e0540393fa5cd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a4ce7aaaa629fc6e16a2f5392d9342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27777314e1d5e914bf01c574ee026e60.png)
您最近一年使用:0次
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【推荐2】若函数
的图象关于坐标原点中心对称,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5bf846c575a495e43c0f7645954be22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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