设直线
与椭圆
相交于
两点.
(1)若
,求
的范围;
(2)若
,且椭圆上存在一点
其横坐标为
,求点
的纵坐标;
(3)若
,且
,求椭圆方程.
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944605982720/1571944611921920/STEM/0baffa06700244788efa6bbc5d64155e.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944605982720/1571944611921920/STEM/2fa19bbf03ba41e79b865f0b38ee4bd9.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944605982720/1571944611921920/STEM/ca53f3e246d344d481a656acb83ef5cf.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944605982720/1571944611921920/STEM/1b90a48d4fb94ac9b397601fa2647c27.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944605982720/1571944611921920/STEM/c7a1a2adb20c4998a463af844c42ba2c.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944605982720/1571944611921920/STEM/d5c678f23e394916a9b6db0fbaa222e1.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944605982720/1571944611921920/STEM/8019de93ec82461184577df4bfdf68f0.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944605982720/1571944611921920/STEM/b3204af557924ad88bdca5ccb46b9a07.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944605982720/1571944611921920/STEM/8019de93ec82461184577df4bfdf68f0.png)
(3)若
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944605982720/1571944611921920/STEM/d5c678f23e394916a9b6db0fbaa222e1.png)
![](https://img.xkw.com/dksih/QBM/2015/1/5/1571944605982720/1571944611921920/STEM/d92be274b3d741e19abb88f4b608b71e.png)
更新时间:2016-12-03 07:52:24
|
相似题推荐
【推荐1】如图,已知椭圆
:
,过点
的直线
与椭圆
相切于第一象限的点
,
是坐标原点,
于
.
![](https://img.xkw.com/dksih/QBM/2021/5/8/2716738541166592/2718703508905984/STEM/5536c385-1c4a-4786-b1ba-83a029b0ace7.png?resizew=306)
(1)求点
的坐标(用
表示):
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27179665507e05bad551e8a4d79d593.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a933dd7affa1d7542c62449ab99f00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/2021/5/8/2716738541166592/2718703508905984/STEM/5536c385-1c4a-4786-b1ba-83a029b0ace7.png?resizew=306)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0314bc045000a86dc0c7ae3a5d011fd9.png)
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【推荐2】已知椭圆
与椭圆
有相同的焦点,且过点
.
(1)求椭圆
的标准方程;
(2)若
是椭圆
上一点且在
轴上方,
为椭圆
的左、右焦点,若
为直角三角形,求
点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ea5ff71e486af6799871a51841f1844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef233ad3db01fa3ce9ee94eaad8e64e.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐1】已知是离心率为
的椭圆
:
(
)上任意一点,
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(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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【推荐2】平面直角坐标系中,动点M到定点
的距离与它到直线
的距离之比为
,
(1)求点M的轨迹方程.
(2)若点
,则求
的最大值与最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0590d52d79cde257d810882f9e7bb403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bae2ccaececa8674201e84bb4f7a4f8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c14ff9b66f21c05e52dc3c8908c2df.png)
(1)求点M的轨迹方程.
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e673c5aa17d19a2a9edb7b27a1ef2de.png)
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【推荐1】如图,已知圆
,点
在圆上,点
,
,线段
的垂直平分线与
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.当点
在圆上运动时,点
的轨迹为曲线
.
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的方程;
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与
轴交于点
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在点
的左侧),与
交于
,
两点,若
,求直线
的方程.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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【推荐2】已知椭圆C:
的左,右焦点分别为
,
,动直线l:
与椭圆C相切,且当
时,
.
(1)求椭圆C的标准方程;
(2)作F1P⊥l,F2Q⊥l,垂足分别为P,Q,求四边形F1F2QP的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84244d18340b00f3274a27fbd9b86cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e61c05bf5049ce6d74e5bcd0f0ebec8.png)
(1)求椭圆C的标准方程;
(2)作F1P⊥l,F2Q⊥l,垂足分别为P,Q,求四边形F1F2QP的面积的最大值.
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