已知函数
是定义在实数集
上的奇函数,当
时,
,若集合
,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a154aa77357cb73cbcd37275d873a324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ffa99a0009bc9347e2d10c3c5a7757.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f59f10feb31ae2b6bf1b81a11a7c0ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07900d53dafa32774cc8d15b79febe64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
17-18高一上·江苏常州·期中 查看更多[2]
更新时间:2018-10-20 16:45:16
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困难
(0.15)
名校
解题方法
【推荐1】已知函数
给出下列四个结论:
①若
有最小值,则
的取值范围是
;
②当
时,若
无实根,则
的取值范围是
;
③当
时,不等式
的解集为
;
④当
时,若存在
,满足
,则
.
其中,所有正确结论的序号为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff4e0cfa86f6d91ff0b3cdb3251393b.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c6cc71d0c988d725b25c55c2672919c.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976d18a5396ba232f0aa38d136f1d749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da1606791e5eeefbf298210543e01dd4.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5bcfb3bafe8373dd907e0e55d08f8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168fef6477a494abceae56fb6c2e4c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b61bb7cb94b4d06f0090df1e365667.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339de01d9636343c484391b421c31301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ec808ad60dbf016632ec816eaca1df.png)
其中,所有正确结论的序号为
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【推荐2】已知函数
,若
有5个零点,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ed777ee40a18b046481b3f93dd6c078.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fea63f6aa6ec28a41faab0fc496d374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
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【推荐1】已知函数
的图象与
的图象有四个不同交点,其横坐标从小到大依次为
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b214363b06afecc73269b952ca9688e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd58c849ab2237ff8161902ebf5cca93.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e714254cc028b2332db403522e72a304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c4473159277aed64ea96c4af087954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b214363b06afecc73269b952ca9688e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd58c849ab2237ff8161902ebf5cca93.png)
您最近一年使用:0次
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解题方法
【推荐2】设函数
的定义域为R,
为奇函数,
为偶函数,当
时,
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f79a9d20a20a0d5040d15a777f4e3b1.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d84f0329e05fe669cc4dc7be14070d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d7661d3fc28f785b438ad8c8f9d240a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fce15aa17ef3c679faeaaddbeb36823c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35386fe82dd2f176e0617b643bb3257b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f79a9d20a20a0d5040d15a777f4e3b1.png)
您最近一年使用:0次
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(0.15)
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【推荐1】已知函数
,且
,给出下列命题:①
;②
;③当
时,
;④
,其中正确的命题序号是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697e691a984b99038c24f0d3caf2c3f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2402d20e086059be06e50094fba33510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a105f7a369ce7168cc423fe6af24528.png)
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您最近一年使用:0次
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【推荐2】已知实数
,函数
,
.若方程
在
上有且仅有4个实数根,则实数
的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91af7006414826041eada8d63b3afcf5.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8bfb563f79688d136e0cb958b5153c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次