1 . 已知点
,点
是圆
上任意一点,则
面积的取值可为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e541e079f5b98ecbdc1381cff80d9868.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd767240a603ca0c0db5567707eb704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.4 | B.8 | C.![]() | D.![]() |
您最近一年使用:0次
2 . 已知点P在圆C:x2+y2-2x+6y-6=0上,点A,B分别在直线l1:2x-y+7=0和直线l2:2x-y+13=0上移动,若点M是线段AB的中点,则|PM|的最小值是( )
A.3![]() | B.3![]() | C.3![]() | D.3![]() |
您最近一年使用:0次
2020-09-25更新
|
201次组卷
|
2卷引用:广西玉林市2019-2020学年高一下学期期末质量检测考试数学试题
3 . 极坐标系的极点为直角坐标系
的原点,极轴为
轴的正半轴,两极坐标系中的长度单位相同.已知曲线
的极坐标方程为
,
.
(1)求曲线
的直角坐标方程;
(2)在曲线
上求一点,使它到直线
:
(
为参数)的距离最短,写出
点的直角坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdebedd02b4ea57f8562443742086d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d0ca9a39621967d7ba5629ea9b12d78.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)在曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa836f5800641bb7d3b221356b2c0bf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
2017-12-29更新
|
889次组卷
|
7卷引用:广西陆川县中学2018届高三12月月考数学(文)试题