题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004930-29089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004930-50500.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004930-38586.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-45453.gif)
(1)求圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004930-29089.gif)
(2)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-14631.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-36581.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004930-29089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-14631.gif)
答案
(1)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-61870.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004932-34101.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004932-95380.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004930-29089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004932-89041.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004932-74481.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004933-80646.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004933-60862.gif)
解得
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004933-70864.gif)
所以圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004930-29089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-61870.gif)
圆心为
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004930-29089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004933-42498.gif)
所以圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004930-29089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-61870.gif)
(2)由于直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-14631.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-36581.gif)
当直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-14631.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004933-15672.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004930-29089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-61870.gif)
当直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-14631.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-14631.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004934-66863.gif)
即:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004934-69581.gif)
因为直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-14631.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004930-29089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004930-29089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004934-94614.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004934-24388.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004935-30773.gif)
解得
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004935-13907.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004935-48632.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004935-13910.gif)
所以直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004931-14631.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004936-52345.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004936-58932.gif)
即:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004932-34101.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004932-95380.gif)
核心考点
举一反三
已知圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004919-94741.gif)
(I)求轨迹E的方程;
(II)过点P(1,0)的直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004919-11344.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004919-20964.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004920-30961.gif)
已知圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004903-96367.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004903-11883.gif)
(1)求过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004904-81815.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004903-96367.gif)
(2)过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004904-85987.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004903-96367.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004904-94743.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004904-13331.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004905-70407.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004859-71303.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004900-36721.png)
A.相交或相切 | B.相交或相离. | C.相切. | D.相交 |
A.8 | B.12 | C.16 | D.20 |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004844-13870.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023004844-83636.png)
最新试题
- 1下列选项中能体现我国气候资源一大优势的是( )A.雨热同期B.冬季严寒C.春寒干燥D.秋季多风沙
- 2(选修4-2:矩阵与变换)矩阵3324,向量β=68,(Ⅰ)求矩阵A的特征值和对应的特征向量;(Ⅱ)求向量α,使得A2α
- 3某气态烷烃与丙炔的混合气体22.4 L ( 标准状况 ) ,完全燃烧后生成121 g CO2 和40. 5 g H2O,
- 4在下面语段中,依次填入关联词语最恰当的一项是[ ]四合院是北京城的代表。四合院_______,_______,_
- 5一块石头和玩具气球连在一起,投入水中后下沉,当气球完全浸没后,在继续下沉过程中石块和气球所受的总浮力将( )A.越来越
- 6我国是世界上居民储蓄率最高的国家之一。近几年来居民储蓄余额一直居高不下,过高的居民储蓄为我国经济建设提供了有力的资金支持
- 7黄河中游存在的问题:_____________严重,_____________严重,形成原因:乱伐森林、滥垦草地、流经_
- 8我国领土南北跨越的纬度近500,大部分在______带,小部分在______带,没有寒带。
- 9阅读下面的文言文,完成后面题目。浮生六记·浪游记快沈复①余自粤东归来,有吴云客偕毛忆香、王星灿邀余游西山小静室,余适腕底
- 10如图,在△ABC中,∠ACB=90°,分别以AC,AB为边,在△ABC外作正方形ACEF和正方形AGHB,作CK⊥AB,
热门考点
- 1下列物质中,一般不跟其他物质发生复分解反应的是( )A.KNO3B.NaClC.HNO3D.Ca(OH)2
- 2(12)-1+(3.14-π)0-8+22.
- 3非洲最高峰乞力马扎罗山海拔5859米,山顶气温比同纬度海拔900米处气温约低( )A.30 ℃B.18 ℃C.20 ℃
- 4独立自主是我国外交政策的基本立场,在对外活动中主要表现为 [ ]①与周边国家平等互利、和平共处②独立自主地处理一
- 5与人类关系最密切的水循环是[ ]A、海陆间水循环B、内陆循环C、海上内循环D、生物循环
- 6阅读下面的文字,完成问题。湖南精神在华夏五千年文明进程中,三湘儿女承前启后,不断开拓,不仅创造了辉煌灿烂的湖湘文化,而且
- 7下列句子中成语使用错误的一项是()(2分) A.奥巴马在讲话中坚信“所有爱好和平并相信人之尊严者都会为本拉登被打死欢
- 8阅读下面一篇文章,完成小题,共9分。我们的宇宙外面是什么在宇宙学中,有一个非常重要的常数,叫做宇宙学常数。这个常数在
- 9商业银行是以利润为主要经营目标的。 [ ]
- 10— Thank you.— _____. [ ]A. OK. B. That"s right. C. I"m