名校
1 . (1)已知
,
,
,用反证法证明:
中至少有一个不小于
;
(2)用数学归纳法证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab560cdc1f2fff8483e64235774d2aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/695a08f451a58854ed4453aee7de8c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(2)用数学归纳法证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c431e455f71a9a0ab6649846a4f117c4.png)
您最近一年使用:0次
2020-03-15更新
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244次组卷
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2卷引用:四川省成都市树德中学2019-2020学年高二下学期定时检测(线上开学考试)数学试题