1 . 已知椭圆C:
的长轴长为4,离心率为
,A,F分别为椭圆C的左顶点、右焦点.P,Q为椭圆C上异于A的两个动点,直线AP,AQ与直线l:
分别交于M,N两个不同的点.
(1)求椭圆C的方程:
(2)设直线l与x轴交于R,若P,F,Q三点共线,求证:
与
相似.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
(1)求椭圆C的方程:
(2)设直线l与x轴交于R,若P,F,Q三点共线,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1511281590030d7c754c0c6a6bb77f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260b6bc61da3f8bf314a388f558cde7c.png)
您最近一年使用:0次
2 . 已知
分别为椭圆
:
的左、右顶点,
为椭圆
上异于
两点的任意一点,直线
的斜率分别记为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/10/85595577-2991-4631-bb6f-2dd7efdd6a73.png?resizew=199)
(1)求
;
(2)过坐标原点
作与直线
平行的两条射线分别交椭圆
于点
,问:
的面积是否为定值?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80b861ba40387cb2bcd04945f5a371a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/10/85595577-2991-4631-bb6f-2dd7efdd6a73.png?resizew=199)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49d1ebc3ba66fdefde643d492fd6d02.png)
(2)过坐标原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f02028a3847c4807c2d3cf0ea7efb8.png)
您最近一年使用:0次
2017-04-15更新
|
831次组卷
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4卷引用:2017届重庆市高三4月调研测试(二诊)数学理试卷