题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-99958.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-61829.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-20239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-31612.png)
(1)求圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
(2)求过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-80040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-83548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
(3)已知
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-82041.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024812-19808.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024812-78361.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024812-96281.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024812-74087.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024813-80440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024813-43589.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024813-58857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024813-53400.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024814-20407.png)
解析
试题分析:(1)先联立直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024814-67214.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-99958.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024814-40968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-80040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-80040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024814-76711.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-80040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024814-29851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024815-27459.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024815-41765.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024815-30684.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024815-54262.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024815-13002.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024812-74087.png)
试题解析:(1)因为圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-61829.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-20239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024816-90710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024816-18137.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024816-12115.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024816-56911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024817-83317.png)
半径
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024817-36145.png)
所以圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024813-80440.png)
(2)由
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-80040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-80040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024817-56870.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024817-45147.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024817-46385.png)
故过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-80040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024811-83548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024813-43589.png)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024815-41765.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024815-30684.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024815-54262.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024818-78483.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024812-19808.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024810-34030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024818-25187.png)
即所求轨迹方程为
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024813-58857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024813-53400.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024814-20407.png)
核心考点
试题【已知圆的圆心在直线上,且与轴交于两点,.(1)求圆的方程;(2)求过点的圆的切线方程;(3)已知,点在圆上运动,求以,为一组邻边的平行四边形的另一个顶点轨迹方程】;主要考察你对圆的方程等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024804-44146.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024805-39223.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024805-88903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024805-28645.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024755-71014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024756-53840.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024756-99379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024756-88545.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024756-44555.png)
(1)求圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024755-71014.png)
(2)求过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024757-44139.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024757-86277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024755-71014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024749-64986.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024749-53263.png)
A.1 | B.4 | C.5 | D.6 |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024745-77204.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024745-84219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024738-86078.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024739-84022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024739-90427.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023024739-90427.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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