1 . (1)比较
与
的大小,其中
;
(2)设
,
,
,比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ba8e67f1fc02b0a38c11279e1c9c65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f531138034bef9ecd0135582d73c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(2)设
![](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/76a89495c19be4f58ee3f60940f9765f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b3aa7678e9a9bd9c50132f66f9b69a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/674b319deb749af85ac9138466296370.png)
您最近一年使用:0次
名校
2 . 对在直角坐标系的第一象限内的任意两点
,
作如下定义:
,那么称点
是点
的“上位点”,同时点
是点
的“下位点”.
(1)试写出点
的一个“上位点”坐标和一个“下位点”坐标;
(2)设
、
、
、
均为正数,且点
是点
的上位点,请判断点
是否既是点
的“下位点”又是点
的“上位点”,如果是请证明,如果不是请说明理由;
(3)设正整数
满足以下条件:对任意实数
,总存在
,使得点
既是点
的“下位点”,又是点
的“上位点”,求正整数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b2356786e0b902deee0fac769f27dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
(1)试写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c39c16d3c056a9627afbc9501e3f8b1.png)
(2)设
![](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/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c0895f241bb91f0a8aecbaebfdc7d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b807b9b8da58da1b6778865efccb01b0.png)
(3)设正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e70003a35025575e3d1838559e4650e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e36bff57bcfa86432b340e25e51d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceb955cff0a243b938fe2d2d1e8a5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3211e04504f70f90b06a544c6b396b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb08794a404c650da28994c0c029ffe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2019-11-13更新
|
563次组卷
|
3卷引用:2.1等式性质与不等式性质-2021-2022学年高一数学同步辅导讲义与检测(人教A版2019必修第一册)
(已下线)2.1等式性质与不等式性质-2021-2022学年高一数学同步辅导讲义与检测(人教A版2019必修第一册)上海市南汇中学2019-2020学年高一上学期十月考试数学试题江西省上饶市2019-2020学年高二上学期期末数学(理)试题
3 . (1)已知
为正实数,
,试比较
和
的大小;并指出两式相等的条件;
(2)求函数
,
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a597828a18eda6ba580b799f65ce3389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69718df9276f37396b889635752df49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187fcbae8ec1b4fd708215e107d6b93a.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66c994bb577ff7084dd1469e8d15d700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1df2a8b51ea0efaaec4d6f96742e34.png)
您最近一年使用:0次
4 . 解下列不等式:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75983d16d753c68aa3ec11a94b0e2041.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54f8a63b9a7252c33914c225307abf35.png)
您最近一年使用:0次
2019-11-05更新
|
370次组卷
|
5卷引用:人教A版(2019) 必修第一册 突围者 第二章 第三节 二次函数与一元二次方程、不等式
5 . 已知
.
(1)比较
,
,在
时的大小关系;
(2)解关于
的不等式:
;
(3)若
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a098419cd2737c6ec00830aa560c95d.png)
(1)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c92c8cdb7137f9b463a8521f7e36c59d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5609671158b61b2b8b42861dc800c0d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec72ca557aa4229ee871628ffcf0d8a0.png)
(2)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ec0a04d44656bd8b58d19afabbf235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
6 . 已知三个不等式:①
;②
;③
.
(1)若同时满足①、②的
值也满足③,求
的取值范围;
(2)若满足③的
值至少满足①和②中的一个,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09bc5773a87d2996b87c4bdebe9585d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22f6de33ba956065bc510e3d4d92de5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1989df0e78fb7aa068eddc3ce243ee04.png)
(1)若同时满足①、②的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若满足③的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
7 . 对于实数
,若
,则规定
,解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8066fcd1821a35d005390b4ee743718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40612f254d4a38abc21b4b3042337ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cec911af87e18edfd269dbfeb966daf.png)
您最近一年使用:0次
2019-10-30更新
|
160次组卷
|
2卷引用:沪教版 高一年级第一学期 领航者 第二章 每周一练 (3)
8 . 下面的问题与著名的柯西不等式有关,请你比较
与
的大小,并猜测更一般的结论(不必证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf7e6232a3919536f7f3a5242b1a525f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c9461a6b6880d90396b1cda5175aaf0.png)
您最近一年使用:0次
9 . 设
,
,试比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9239b80eff330a1433ce9d34dcc626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cf461a9807a6c6b52f7830d299a344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
您最近一年使用:0次
10 . 已知不等式
的解集设为
.
(1)求集合
;
(2)已知不等式
的解集为
,判断集合
、
的关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c358f4c135c99c0172d540590363630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)已知不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af145bb4a85b60b2cae0fc2bf374630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
您最近一年使用:0次
2019-10-30更新
|
249次组卷
|
2卷引用:沪教版 高一年级第一学期 领航者 第二章 2.3其他不等式的解法(2)