题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015322-39071.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-94200.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-27983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-27366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-33421.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-32587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-27366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-70775.png)
解析
试题分析:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-68838.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015324-52789.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015324-46511.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015324-81487.png)
然后利用
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015324-36876.png)
由已知:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015324-79921.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015324-96897.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015325-92309.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-68838.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015324-52789.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015324-46511.png)
与
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015322-39071.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015325-41453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015324-81487.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-68838.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015325-40740.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015325-84364.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015326-99476.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015326-45847.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015326-43906.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-32587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-27366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015323-70775.png)
点评:解本小题的关键是建立S关于直线斜率k的函数关系式,方法是
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015326-37456.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015315-37689.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015315-62629.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015315-17934.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015315-62629.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015309-20462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015309-32679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015309-65067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015309-81225.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015309-27787.png)
点,则
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015309-65985.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015300-48895.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015300-77710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015300-56337.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015300-31458.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015301-96931.png)
圆心,
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015301-96621.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015301-27749.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015301-70889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015301-79624.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015254-57260.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015254-34555.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015254-62304.jpg)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015249-29730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015249-60273.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015249-70419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015250-59478.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015250-91134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015250-16350.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015250-11698.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026015251-92477.jpg)
A.28 | B.30 | C.35 | D.25 |
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