1 . 若方程
有两虚根
、
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5256a6dffce235ed189536c8a0fb8921.png)
__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/836539fd06c5918e249137e98e3b9b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5256a6dffce235ed189536c8a0fb8921.png)
您最近一年使用:0次
2020-02-10更新
|
168次组卷
|
2卷引用:上海市闵行区七宝中学2016届高三下学期第二次三模(理)数学试题
2 . 作斜率为
的直线
与椭圆
交于
、
两点(如图),且
在直线
的左上方.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/300fcca5-50bf-4d41-9823-830fa83185d2.png?resizew=201)
(1)证明:
的内切圆的圆心在一条定直线上;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f60eef6cf563ceb168e36025d023db5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dba969413d0c05cfea8cae5b37a7c21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/10/300fcca5-50bf-4d41-9823-830fa83185d2.png?resizew=201)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53502463cc76201000e02df314e58769.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15b82151bff7cc0238d2034a6129f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53502463cc76201000e02df314e58769.png)
您最近一年使用:0次