1 . 调查某地居民每年到商场购物次数
与商场面积
、到商场距离
的关系,得到关系式
(
为常数).如图,某投资者计划在与商场
相距10km的新区新建商场
,且商场
的面积与商场
的面积之比为
.记“每年居民到商场
购物的次数”、“每年居民到商场
购物的次数”分别为
,
,称满足
的区域叫做商场
相对于
的“更强吸引区域”.
与
相距15km,且
.当
时,居住在
点处的居民是否在商场
相对于
的“更强吸引区域”内?请说明理由;
(2)若要使与商场
相距2km以内的区域(含边界)均为商场
相对于
的“更强吸引区域”,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3434e1664f467fabfa28d5f9115f387.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/3de67b8fc083f137ebbb82e6c2ba33cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ab1256702aef4e9f1a5eb6c12ecc96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fbd67f60f04c278bdd867fdb3979dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf32171461f12fc1edf54b9ec44efea.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e12bfde565540f059dd27ea47dfaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若要使与商场
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
名校
2 . 若函数
在其图象上存在不同的两点
,
,其坐标满足条件:
的最大值为0,则称
为“柯西函数”,
则下列函数:
;
;
;
.
其中为“柯西函数”的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f4d0979f99fca4394ea0aa7d53d1f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183840b6798ab3f683c8342e925c862d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90da2e0fe6589a1fb50a5225c9b0f047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed9a93b4bf49ad766e54a767f18fae38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f4d0979f99fca4394ea0aa7d53d1f5.png)
则下列函数:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdfe5d01231f87e59225f19a1b26f15e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9f20c0fba0980f358472046b127335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4dc5d29c069bb67d0642090d660965d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269adee22b7ea8a246b56d06fa3beb70.png)
其中为“柯西函数”的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2019-03-24更新
|
862次组卷
|
3卷引用:【校级联考】江西省临川第一中学等九校2019届高三3月联考数学(文)试题
2010·广东·三模
名校
3 . 若对任意
,
有唯一确定的
与之对应,则称
为关于
,
的二元函数,现定义满足下列性质的
为关于实数
,
的广义“距离”.
(
)非负性:
,当且仅当
时取等号;
(
)对称性:
;
(
)三角形不等式:
对任意的实数
均成立.
给出三个二元函数:①
;②
;③
,
则所有能够成为关于
,
的广义“距离”的序号为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc4d5f4cc4f20f44adbae0d2373681b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c3c1ed4fb65ab9505ad8078d8d0fb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c3c1ed4fb65ab9505ad8078d8d0fb5.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/f1c3c1ed4fb65ab9505ad8078d8d0fb5.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/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638df541efb3448608fbad59195e7c99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b9d5aaaceaa3ac514d17fcfefbf9b4.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f0d10d93a4cd75d6987cffce7ce7a84.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb1647c7592d692093ccb10ba99ff0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
给出三个二元函数:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f322b17f7284251845f84b376f2ec134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6820cb93dea9eb8430dc184664acb4b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c112be1d02723667d2932f0b18eab7ed.png)
则所有能够成为关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
2017-12-24更新
|
740次组卷
|
4卷引用:广东省华南师大附中2010届高三第三次模拟考试数学试卷(理科)
(已下线)广东省华南师大附中2010届高三第三次模拟考试数学试卷(理科)北京市西城区44中2018届高三上12月月考数学试题北京市西城44中2017届高三12月月考数学(理)试题2019年上海市上海中学高三下学期数学测试2数学试题