11-12高三·安徽安庆·阶段练习
1 . 已知定点
,动点
满足
.
(1)求动点
的轨迹方程,并说明方程表示的曲线;
(2)当
时,求
的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d59081c841af40214b4e91d136200b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a10ebd8a12ed75497c27657ceaa52e61.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb917fa8275b8a0c9a3ccaf7061fec5d.png)
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2016-12-01更新
|
607次组卷
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4卷引用:2014-2015学年辽宁省抚顺市重点高中协作校高一下期末考试数学试卷1
2014-2015学年辽宁省抚顺市重点高中协作校高一下期末考试数学试卷12014-2015学年辽宁省抚顺市重点高中协作校高一下期末考试数学试卷2(已下线)2012届安徽省怀宁中学高三第四次月考理科数学试卷广东省兴宁市沐彬中学2018届高三上第二次月考试题数学(理科)
9-10高二·湖北黄冈·期中
解题方法
2 . 已知点
,一动圆过点
且与圆
内切.
(Ⅰ)求动圆圆心的轨迹
的方程;
(Ⅱ)设点
,点
为曲线
上任一点,求点
到点
距离的最大值
;
(Ⅲ)在
的条件下,设△
的面积为
(
是坐标原点,
是曲线
上横坐标为
的点),以
为边长的正方形的面积为
.若正数
满足
,问
是否存在最小值,若存在,请求出此最小值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5421a28dc3675ae20190d6090793246e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dbd30c3717b0c5ec48821dd137e5383.png)
(Ⅰ)求动圆圆心的轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3160fc73f2a90ae4a1a97351ab2673b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7041b9af5b111b67a0eb98430ceaa17.png)
(Ⅲ)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83efd6afec2f73c52e4b027a12d9f817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701e8fe74f0afb74b16fc977fed34d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7041b9af5b111b67a0eb98430ceaa17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84f27e920fe12854e85c6aa2533a8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb6eb71597d42428f4c00980d370b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
9-10高一下·辽宁大连·期末
解题方法
3 . 已知椭圆的中心是坐标原点
,它的短轴长为
,一个焦点为
,一个定点为
,且
,过点
的直线与椭圆相交于
两点.
(1)求椭圆的方程和离心率;
(2)若以
为直径的圆恰好过坐标原点,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b211a07d203aa93e12e230e8c8d4e49e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99fe7dae11646e0a5eb5e6317375be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d385ad5c3b71ccf0241910a0c5305240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
(1)求椭圆的方程和离心率;
(2)若以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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