题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154527-44650.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154527-28701.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154527-35148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154527-19935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154528-22717.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154528-51158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154528-45784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154528-53033.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154529-24757.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154529-97909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154529-42853.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154527-28701.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154529-49192.png)
解析
试题分析:当
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154528-45784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154529-24757.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154530-14285.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154529-24757.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154530-20752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154530-51743.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154530-89295.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154530-19982.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154531-36236.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154531-29797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154531-62796.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154531-15770.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154531-46627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154527-28701.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154529-49192.png)
点评:本题关键是找到取得最大值最小值的点的位置
核心考点
举一反三
已知椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154520-29857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154521-88843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154521-52806.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154521-36537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154521-89858.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154522-97897.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154521-36537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154521-89858.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154521-52806.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154522-22152.png)
(1)求抛物线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154521-89858.png)
(2)求线段
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154522-27926.png)
椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154507-98504.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154507-16861.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154507-57899.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154507-84801.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154508-21183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154508-28434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154508-72108.png)
(1)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154507-98504.png)
(2)过椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154507-98504.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154507-57899.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154507-84801.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154508-74031.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154509-36999.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154509-67468.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154509-65046.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154509-17352.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154510-25300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154507-84801.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154510-44958.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154510-15167.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154510-33363.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154511-90562.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154511-86283.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154511-13031.png)
①求点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154509-17352.png)
②试判断直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154511-57388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154512-89223.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154512-15816.png)
已知椭圆C:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154500-97434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154500-34416.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154500-80678.png)
(Ⅰ)求椭圆方程;
(Ⅱ)设P为椭圆上一点,A为左顶点,F为椭圆的右焦点,求
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154500-52201.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154453-23808.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154453-14258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154453-43043.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154453-25194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154454-12513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154454-20335.png)
如图,已知椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154439-88079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154439-78117.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154440-78635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154440-78635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154440-31331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154440-81941.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154440-55491.jpg)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154440-78635.png)
(Ⅱ)作直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154441-53583.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154441-95041.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154440-78635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154441-86327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154440-78635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154441-53861.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154441-37271.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154442-31414.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023154442-59048.png)
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