题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040918-24164.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040918-46371.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040918-32987.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040918-32987.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040919-51895.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040919-79868.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040919-33687.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040919-47178.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040919-51895.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040919-97668.gif)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040919-70990.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040919-71821.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040920-97466.gif)
按向量
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040918-46371.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040920-10224.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040919-51895.gif)
但
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040920-34856.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040920-13161.gif)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040921-45360.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040919-71821.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040920-97466.gif)
按向量
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040918-46371.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040920-10224.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040919-51895.gif)
故
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040921-64681.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040921-52278.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040921-13413.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040907-22360.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040907-88757.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040903-91394.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040904-77179.gif)
已知A、B分别为曲线C:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040857-93794.gif)
(I)当
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040857-11527.gif)
(II)点M在x轴上方,若
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040857-65594.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040858-88983.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040858-22896.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040851-91040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040851-10191.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040852-70923.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040852-13039.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040852-91391.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040852-60239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040853-63411.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040843-30083.gif)
已知椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040843-81565.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040843-39880.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040844-37731.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040844-43496.gif)
(Ⅰ)求曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040844-37731.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040844-10699.gif)
(Ⅱ)直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040844-95282.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040844-37731.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040844-27799.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040845-47303.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040845-34642.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026040845-99798.gif)
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