名校
1 . 若椭圆
和椭圆
满足
,则这两个椭圆相似,
称为其相似比.
(1)求经过点
,且与椭圆
相似的椭圆方程;
(2)设过原点的一条射线
分别与(1)中两个椭圆交于
两点(其中点
在线段
上),求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441fb4299c9f4f1f7c683958f4882d7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c074753132281fca5df48cb3ca29385a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1b2b6b6ea7598f0891ba82f044ee1a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)求经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5251d48153b94aa05422dee2d89691a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80b861ba40387cb2bcd04945f5a371a.png)
(2)设过原点的一条射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f662756a3c4cbbc8868adbfed6b1f44f.png)
您最近一年使用:0次
名校
2 . 已知P是椭圆
上的点,
,
分别是椭圆的左、右焦点,若
的面积为
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2093f173118dcd84a1d1db67fddf6575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a055d94c4c69a7f867c0e2b69bd8041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1996f60e2c55e0caa2b095ac23ab2b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c8116aa763285d9595326ec116882a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b283dff34b1dcf9582484f0c7adc87f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee51e2bac715aa1c5dbb4d109b9a115.png)
您最近一年使用:0次
2019-03-29更新
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482次组卷
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2卷引用:【全国百强校】四川省成都外国语学校2018-2019学年高二下学期入学考试数学(理)试题