名校
1 . 若实数
,
,
满足
,则称
比
接近
.
(Ⅰ)若
比
接近
,求
的取值范围;
(Ⅱ)已知
,
且
,求证:
比
接近0.
![](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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b2f36a11b3ee72115629252bcdbe61.png)
![](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/294f5ba74cdf695fc9a8a8e52f421328.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1d2e5599453f8d4c04369bc8f79962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(Ⅱ)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42e18df3b4e9522029a9310c5890d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099114025abd0c8ea7f2466209612ed1.png)
您最近一年使用:0次
2017高二·全国·课后作业
2 . 若
,
,
,则
的大小关系是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e1b7ade6f2225575f6854c7cb04088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb5c5224e76dbb89b1c29c605a3804b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
您最近一年使用:0次
2017-11-27更新
|
420次组卷
|
3卷引用:同步君人教A版选修4-5第二讲 证明不等式的基本方法
(已下线)同步君人教A版选修4-5第二讲 证明不等式的基本方法高中数学人教版 选修4-5 第二讲 证明不等式的基本方法 02 证明不等式的基本方法陕西省西安市西咸新区泾河新城第一中学2022-2023学年高二下学期5月质量检测理科数学试题
3 . 已知
,求证:
(Ⅰ)
;
(Ⅱ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1b5f665d41a2d0e4980b35c1b6e578.png)
(Ⅰ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96aed1778207c96ca1cac8efc03b243.png)
(Ⅱ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb99fa7eb6d9b11722f5e9518120ca9.png)
您最近一年使用:0次
2017-09-05更新
|
547次组卷
|
3卷引用:陕西省延安市吴起高级中学2018届高三下学期第一次月考数学(文)试题
4 . (1)求证:当a、b、c为正数时,
.
(2)已知
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077ed1711b7328d5c4e3b3f2e63f6ba1.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b6c5526947e9bef051bc3bdf7fd186d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b1411bbc505b5056e68e077d18e06b.png)
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2017-07-28更新
|
470次组卷
|
2卷引用:河南省鹤壁一中2016-2017学年高二下学期第一次段考理数试题
5 . 求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08aa802a1d0c58bfb9e8ef42e6d5c0af.png)
您最近一年使用:0次
2017-07-26更新
|
193次组卷
|
2卷引用:陕西省宝鸡市金台区2016-2017学年高二下学期期中考试数学(文)试题
6 . 选择适当的方法证明
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd470240a8ed3ec3722e21bb1c0d9092.png)
(2)已知
,
,
,求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709d6f3c95df76f1c810a67ddc62626e.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd470240a8ed3ec3722e21bb1c0d9092.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709d6f3c95df76f1c810a67ddc62626e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a32f316aa49ac4cff6a3f9e9a51dff4b.png)
您最近一年使用:0次