已知椭圆C:
的左、右焦点分别为
,
,过焦点
的直线l与椭圆C相交于
两点,椭圆C在
两点处的切线交于点P,则点P的横坐标为______ ,若
的垂心为点H,则
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91fbc9b62f2e82af009bd2f4587969fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa9e6b473819e4e88341e2d98004de48.png)
2023·吉林·三模 查看更多[3]
更新时间:2023-04-06 15:09:49
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【推荐1】已知椭圆
的中心为原点
,焦点在
轴上,椭圆上一点到焦点的最小距离为
,离心率为
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为椭圆上三个不同的点,且
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的面积为___________ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
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【推荐2】已知中心在原点的椭圆
的一个端点为
,直线
.若
上存在相异的两点
,
关于
对称,则椭圆
离心率的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d026d2298b74855ce6b9550ed60bcb6.png)
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【推荐1】已知椭圆的标准方程为
,上顶点为
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,若已知点
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,点
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的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a88c7af934e8ed88dee1c7037520ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f190b17530d81d927c358ac84757a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8678fa21a720c7c5d3a9fc132310d5bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39934fc48ac01ca0919aa140e7dea683.png)
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【推荐2】已知圆
,椭圆
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ac6774c97c90a2c6dbccb2adf20738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e759f106cb7761ca3128802223a77e.png)
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