题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140426-19663.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140427-67612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140427-61883.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140427-26674.png)
A.![]() | B.1 | C.![]() | D.2 |
答案
解析
试题分析: 根据题意可知切线方程
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140427-61883.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140427-67612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140428-64783.png)
核心考点
举一反三
在平面直角坐标系
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140401-42028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140401-41044.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140402-15847.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140402-56184.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140402-18018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140402-80991.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140403-13729.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140401-41044.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140401-41044.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140403-34648.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140401-41044.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140401-41044.png)
⑴求证:点
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140403-46893.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140403-75223.png)
⑵若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140404-24692.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140404-82754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140404-53065.png)
⑶动点M到点
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140404-65146.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140405-75203.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140343-51650.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140343-36025.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140343-36025.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140343-57769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140343-77489.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140343-51650.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140343-36025.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140344-38845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140344-92896.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140344-78721.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140344-92896.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140344-38845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140344-78721.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140344-43466.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140344-38845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140344-78721.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140345-32432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140345-92691.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140345-85966.png)
(1)求新桥
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140343-36025.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140345-39778.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140334-92118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140334-88686.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140334-94119.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140334-98090.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140334-25099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140335-96041.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140335-51197.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140326-41540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140327-53768.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140327-42957.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140327-38016.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140327-15515.png)
(1)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140327-54259.png)
(2)用m表示四边形OAPB的面积S,并求出S的最大值;
(3)设S=" f" (m), 求
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140328-45847.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140318-26630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140318-65902.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140319-71494.png)
(1)求动点
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140318-26630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140319-90043.png)
(2)取
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140319-90043.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140319-45860.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140319-77841.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140319-50453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140320-92449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140320-77379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022140320-77379.png)
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