1 . “曼哈顿距离”是人脸识别中一种重要的测距方式.其定义如下:设,
是坐标平面内的两点,则A,B两点间的曼哈顿距离为
.在平面直角坐标系中
中,下列说法中正确说法的序号为
①若,
,则
;
②若O为坐标原点,且动点P满足:,则P的轨迹长度为4;
③设是坐标平面内的定点,动点N满足:
,则N的轨迹是以点
,
,
,
为顶点的正方形;
④设,
,
,则动点
构成的平面区域的面积为10.
您最近一年使用:0次
11-12高二下·安徽黄山·期中
解题方法
2 . 已知点
与点
在直线
的两侧,则下列说法
①
; ②
时,
有最小值,无最大值;
③
恒成立;
④ 当![](https://img.xkw.com/dksih/QBM/2012/1/6/1570680900141056/1570680905105408/STEM/c3f9b6342f654e3cb61660a2628aef14.png?resizew=48)
,
, 则
的取值范围为(-
;
其中正确的命题是___________ (填上正确命题的序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827539d066d1b78e7ef8bc1569864971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5040486db9bff0e394a61fe4f0b7bd86.png)
![](https://img.xkw.com/dksih/QBM/2012/1/6/1570680900141056/1570680905105408/STEM/918ddd300b1a42fd9656d6db0c0fdc7e.png?resizew=99)
①
![](https://img.xkw.com/dksih/QBM/2012/1/6/1570680900141056/1570680905105408/STEM/17751645d7de400d96c4e7c35669305f.png?resizew=97)
![](https://img.xkw.com/dksih/QBM/2012/1/6/1570680900141056/1570680905105408/STEM/6d01309cb8cb4d0aa6f4497ecb46491d.png?resizew=34)
![](https://img.xkw.com/dksih/QBM/2012/1/6/1570680900141056/1570680905105408/STEM/013ebff07edc4b50b2a19980baa8e816.png?resizew=16)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba2ba5648516e6c70140233569b50c7.png)
④ 当
![](https://img.xkw.com/dksih/QBM/2012/1/6/1570680900141056/1570680905105408/STEM/c3f9b6342f654e3cb61660a2628aef14.png?resizew=48)
![](https://img.xkw.com/dksih/QBM/2012/1/6/1570680900141056/1570680905105408/STEM/87e6eea667b44cf88b0a614ee2262093.png?resizew=32)
![](https://img.xkw.com/dksih/QBM/2012/1/6/1570680900141056/1570680905105408/STEM/c13313b34cb14e3ba1a0349ba3ce9a28.png?resizew=47)
![](https://img.xkw.com/dksih/QBM/2012/1/6/1570680900141056/1570680905105408/STEM/4ec47045ea864808854354ec1421b070.png?resizew=34)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e3b9854242982c19622b9d9b63133b.png)
其中正确的命题是
您最近一年使用:0次
解题方法
3 . 已知点
与点
在直线
的两侧,给出下列说法:
①
;
②当
时,
有最小值,无最大值;
③
;
④当
且
时,
的取值范围是
.
其中所有正确说法的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8530bca5123179cfede86d03738495e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c53ea2ddc3bf3fc9b926af55d462a02b.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b481ff501f2173c755b338d9b94ce02.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e377720fcc0e18ffa0b6e477bb0086.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6cc07106cfb74d20da736872d777149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbac6c9561350ac84cd903500fcf82d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8126b4b9450c410a0c0ee7dc170a1c5b.png)
其中所有正确说法的序号是
您最近一年使用:0次
2016-12-04更新
|
1138次组卷
|
3卷引用:2016届陕西西北工业大学附中高三二模数学(文)试卷