题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-67815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-53242.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-38708.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-19036.png)
(1)求圆
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-67815.png)
(2)若过点
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-42889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-70814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-83678.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-67815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-33661.png)
①求实数
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-70814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-14374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-70814.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-21943.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-27070.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-26969.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-24197.png)
解析
试题分析:(1)由题意直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-19036.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-36848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-36848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-37083.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-67815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-53242.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-38708.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-73707.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-35849.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-72745.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-46482.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-27069.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-37973.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-21943.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-43857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-76533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215121-13010.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215121-16613.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215121-35086.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215121-12558.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215121-79848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215121-11202.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215121-93282.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215122-84776.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215121-13010.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215122-69018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215122-46524.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215122-23484.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215123-78054.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-27070.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215123-79413.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-24197.png)
试题解析:(1)∵
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215123-84299.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-36848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-37083.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-36848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215123-61733.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215123-13075.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-73707.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215124-88673.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-27069.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-37973.png)
∴圆
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-36848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-21943.png)
①:设直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-43857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215120-76533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-36848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215121-13010.png)
∵直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-83678.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215118-67815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-33661.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215124-73676.png)
即实数
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-27070.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-26969.png)
②:设
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215121-79848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215121-11202.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215122-69018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215122-46524.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215124-30146.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215124-15643.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215119-24197.png)
核心考点
试题【已知圆过点,,并且直线平分圆的面积.(1)求圆的方程;(2)若过点,且斜率为的直线与圆有两个不同的公共点.①求实数的取值范围; ②若,求的值.】;主要考察你对点到直线的距离等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215108-84453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215108-26884.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
⑴求圆C的方程;
⑵设Q为圆C上的一个动点,求
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215059-36386.png)
⑶过点P作两条相异直线分别与圆C相交于A,B,且直线PA和直线PB的倾斜角互补,O为坐标原点,试判断直线OP和AB是否平行?请说明理由.
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215051-54697.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215051-66274.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215045-37929.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215045-18158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215045-18158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215046-29789.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215046-44495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215046-42654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215046-71224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215045-18158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215040-45662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215041-72774.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215041-91219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215041-65227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215041-97374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215041-59463.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215042-75036.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215042-72756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022215042-58553.png)
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