题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194440-94820.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194440-74643.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194440-50030.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194441-18028.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194441-42939.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194441-84631.gif)
答案
解析
核心考点
举一反三
在平面直角坐标系xOy中,经过点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194429-75010.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194429-72115.gif)
(Ⅰ)求k的取值范围;
(Ⅱ)设椭圆与x轴正半轴、y轴正半轴的交点分别为A、B,是否存在常数k,使得向量
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194430-59956.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194430-34824.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194410-18272.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194410-95040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194410-35694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194411-85975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194411-10133.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194411-40457.png)
(I)求在
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194412-91343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194412-16971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194411-10133.png)
(II)当
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194412-89982.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194412-69140.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194412-28587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194354-57188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194355-98843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194355-88352.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194355-92239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194355-47148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194355-28225.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194356-85777.png)
(I)求面积
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194355-28225.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194356-51328.png)
(II)求面积
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194355-28225.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194349-77068.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194349-16114.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194350-93777.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194343-22595.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194343-56204.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194343-81199.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194344-86005.gif)
则
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194344-39583.gif)
A
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194344-56851.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194344-96354.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194345-65089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023194345-91652.gif)
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