1 . 已知函数
,函数
有四个不同的零点
,
,
,
,且满足:
,则
的值是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a91e0607e0381f5e115be37c8294dee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4929967211f1fd28d89ba87a6b8a7c.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/3604274ad6707a906eba371a9e884144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1bc168cfd8085bc1c0ad7b1b036a707.png)
A.-4 | B.-3 | C.-2 | D.-1 |
您最近一年使用:0次
2020-10-17更新
|
1310次组卷
|
5卷引用:浙江省温州市苍南县、龙港市2020-2021学年高一上学期“姜立夫杯”数学竞赛试题
2 . 给定正实数
,对任意的正整数
,
,其中
表示不超过实数
的最大整数.
1.若
,求
的取值范围;
2.求证:(i)
;
(ii)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba72a9bd4cffb5dbea68f3cc05c95c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
1.若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/062c6026df79d335604d21223ba13c50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
2.求证:(i)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69a414069ff1d5fc16594f7231aba4e.png)
(ii)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22789db88931d4f2a22b67b9794cfd7f.png)
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