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9-10高一下·辽宁大连·期末 查看更多[2]
更新时间:2016-11-30 07:07:22
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适中
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名校
解题方法
【推荐1】已知
、
分别为椭圆
的左、右焦点,
是过椭圆右顶点且与长轴垂直的直线上的动点,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1648c80e4e5d490a6a9bbf743f5527b8.png)
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解题方法
【推荐2】已知A
,B
,C(2-2a,1),D(-a,0)四点,若直线AB与直线CD平行,则a=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc4b0eb6f6115e1083082392381b94d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97e00024635efb78c314c2ae9fe1b04b.png)
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解题方法
【推荐1】已知点
是离心率为2的双曲线
上的三点,直线
的斜率分别是
,点
分别是线段
的中点,
为坐标原点,直线
的斜率分别是
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbcf744dceb18820e4a1ca354cb3cfe1.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce5d2e7f7ed678e14e2c1d1297cef34.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca1726d463bd741c904abd9b6589056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927456b0989846a2f1573844bbaa2105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942e6dafcfcbf0682856b9f25178694d.png)
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解题方法
【推荐2】已知双曲线
:
与双曲线
有相同的渐近线,
是双曲线
右支上任一点,过点
作双曲线
的两条渐近线的垂线,垂足分别为M,N,O是坐标原点,若
的最小值是
,则当
取最小值时,
的面积是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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