1 . 观察一列算式:
,
,
,
,
,
,
,
,
,
,...,则式子
是第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6759c549bc9674017ac7e472245736c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/208531d7553a4ec4be4d222f81e4b584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82a559fb075f28a8accb2f97760879a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d518554a95fcb069afc438d819d6c76d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f5119a92f3c896841a477ab37071b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78bfb9db9d6e43691ed2c78327851255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b4425bfa0718c682764ab82e28b36b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae8cf5b0aa8fdc23c119e55f01730309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d555418366e978d00fe494aa45a4c99a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/786f7935e5ccd113fcd670710db72b42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/736e0c37e48db0bb0e758722424c40f7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2018-05-21更新
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2卷引用:【全国市级联考】山东省聊城市2017-2018学年高二下学期期中考试数学(文)试题
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2 . 若
,
都是正实数,且
.
求证:
与
中至少有一个成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33190c383deea80d181573c3be8dbba5.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd630a7a3c369bd01d005964525db720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a932789187784eb72a9292eb99872ac.png)
您最近一年使用:0次
2018-05-21更新
|
670次组卷
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5卷引用:【全国市级联考】山东省聊城市2017-2018学年高二下学期期中考试数学(文)试题
【全国市级联考】山东省聊城市2017-2018学年高二下学期期中考试数学(文)试题【全国市级联考】山东省聊城市2017-2018学年高二下学期期中考试数学(理)试题吉林省舒兰市第一高级中学校2018-2019学年高二下学期第一次月考数学(文)试题人教B版(2019) 必修第一册 逆袭之路 第二章 2.2 不等式 2.2.1 不等式及其性质(已下线)第一章 集合与逻辑全章复习与检测卷-【倍速学习法】(沪教版2020必修第一册)
10-11高二下·山东潍坊·期末
3 . 已知
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b510b5ded12ca1bc9da43e9163fbc38.png)
您最近一年使用:0次