半圆
的直径的两端点为
,点
在半圆
及直径
上运动,若将点
的纵坐标伸长到原来的2倍(横坐标不变)得到点
,记点
的轨迹为曲线
.
(1)求曲线
的方程;
(2)若称封闭曲线上任意两点距离的最大值为该曲线的“直径”,求曲线
的“直径”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0e09e2a2cdc2dde8a935f11bc1b897.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f01b186ac8aa73e1a3609b40b6c3ee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若称封闭曲线上任意两点距离的最大值为该曲线的“直径”,求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
2020·湖南邵阳·模拟预测 查看更多[5]
湖南省邵阳市2019-2020学年高三第一次联考数学(文)试题湖南省邵阳市2019-2020学年高三第一次联考数学(理)试题2020届湖北省华师一附中高三2月月考数学(理)试题(已下线)2.1 曲线与方程(提高练)-2021-2022学年高二数学同步训练精选新题汇编(人教A版选修2-1)(已下线)3.1.2 (分层练)椭圆的简单几何性质-2021-2022学年高二数学考点同步解读与训练(人教A版2019选择性必修第一册)
更新时间:2020-01-17 16:15:54
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相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】已知椭圆
的左,右焦点为
,左,右顶点为
,过点
的
直线
分别交椭圆于点
.
(1)设动点
,满足
,求点
的轨迹方程;
(2)当
时,求
点的坐标;
(3)设
,求证:直线
过
轴上的定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d7f614c64ef585eee0ed0cd13c498a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66db9aa75fd3da3ef066fddb67f47d96.png)
直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be2c6a9778365a7467f6222b63c5fd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b81a1f82fe1967ce51ca88214b48aa09.png)
(1)设动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f607559d8c6a23d3d2007c4838cb24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e02d4a55b3628c787ba5da7be4a0834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822921b3e0b6db0ce9c8b4a56043e9e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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适中
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解题方法
【推荐2】已知
,
,
是平面上一动点,且满足
.
(1)求点
的轨迹
对应的方程;
(2)过点
的直线
与
相交于
两点(
点在
轴上方),点
关于
轴的对称点为
,且
,求
的外接圆的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813597f052c8930e12f0a22aeaa3cce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6fad17fa55d7a85132ec44470f3e5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8649259265c1e4c693e8b5d30ab33967.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.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/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50c77cb962f5a44bc4362f34ec2487a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
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适中
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【推荐1】在平面直角坐标系
中,点
为动点,已知点
,
,直线
与
的斜率之积为定值
.
(1)求动点
的轨迹
的方程;
(2)若
,过点
的直线
交轨迹
于
、
两点,以
为对角线的正方形的第三个顶点恰在
轴上,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0338630beeca9e7fa803f63f6b1ce089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fcb73920188f0215bd21a0148eeebed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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【推荐2】动圆M与圆F1:x2+y2+6x+5=0外切,同时与圆F2:x2+y2﹣6x﹣91=0内切.
(1)求动圆圆心M的轨迹方程E,并说明它是什么曲线;
(2)若直线y
x+m与(1)中的轨迹E有两个不同的交点,求m的取值范围.
(1)求动圆圆心M的轨迹方程E,并说明它是什么曲线;
(2)若直线y
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb6da35cb03b489e795ee5f6b612a11.png)
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解题方法
【推荐1】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)
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(0.65)
名校
解题方法
【推荐2】已知椭圆
,四点
,
,
,
中恰有三点在椭圆
上.
(1)求
的方程;
(2)设点
,点
是椭圆
上任意一点,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f669a1d6376f795f05b47eb7d8067c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fbf46db1c38fdcefdfca8777a92875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea67de74c0d7a7c48df4329a625e9234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662c8324ff4c288337a2dbf78be863b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71885f023172807ad43f2c9a670aa960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a203d0478f8390fa2b346500ccb2b63.png)
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