1 . 若实数
、
、
满足
,则称
比
远离
.
(1)若
比
远离1且
,求实数
的取值范围;
(2)设
,其中
,求证:
比
更远离
;
(3)若
,试问:
与
哪一个更远离
,并说明理由.
![](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/17d41b744a89e1a50c96ca75bf090830.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)
(1)若
![](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/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ea5e8fdf104e1cc8348c13a3cd1610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e00794e0df0c62a91e4b7051b2e63da.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/cf298f00799cbf34b4db26f5f63af92f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45900deae0489e87fe448948e8091c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ebc856291255f2d4a6c20b982a2442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
您最近一年使用:0次
2020-07-16更新
|
1493次组卷
|
9卷引用:上海市进才中学2019-2020学年高二下学期期末数学试题
上海市进才中学2019-2020学年高二下学期期末数学试题上海市崇明区2020-2021学年高一上学期期中数学试题上海市崇明中学2021届高三上学期期中数学试题(已下线)专题02 等式与不等式(模拟练)(已下线)上海高一上学期期中【压轴42题专练】(2)(已下线)第3章 不等式 单元综合检测(基础过关)(单元培优)-2021-2022学年高一数学课后培优练(苏教版2019必修第一册)(已下线)专题08 一元二次函数、方程和不等式中的压轴题(二)-【尖子生专用】2021-2022学年高一数学考点培优训练(人教A版2019必修第一册)第3章 不等式(章末测试提高卷)-2021-2022学年高一数学同步单元测试定心卷(苏教版2019必修第一册)(已下线)高一上学期第一次月考解答题压轴题50题专练-举一反三系列
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:上海市南汇中学2019-2020学年高一上学期十月考试数学试题
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(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)