名校
解题方法
1 . 如图,在平面直角坐标系
中,已知椭圆
:
,椭圆
:
,点P为椭圆
的上顶点,点A,C为椭圆
上关于原点对称的两个动点.斜率为
的直线PA与椭圆
交于另一点B,斜率为
的直线PC与椭圆
交于另一点D
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863972923965440/2869021459865600/STEM/de5484fd5ba9479cbb4ea0f1958f03ed.png?resizew=287)
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf6dba18751d6641f9fa02f5756be97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def6b1847098dd39d653c77786cb4eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863972923965440/2869021459865600/STEM/de5484fd5ba9479cbb4ea0f1958f03ed.png?resizew=287)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656972781ee6edb9ffa86a65b408bc74.png)
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2021-12-09更新
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7卷引用:甘肃省定西市临洮中学2021-2022学年高二上学期第二次月考理科数学试题