名校
1 . 已知椭圆
:
,
,
为其左右焦点,离心率为
,
.
(1)求椭圆
的标准方程;
(2)设点
,点
在椭圆
上,过点
作椭圆
的切线
,斜率为
,
,
的斜率分别为
,
,则
是否是定值?若是,求出定值;若不是,请说明理由.
(3)设点
,点
在椭圆
上,点
在
的角分线上,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17618d8d22ebb3fd6835a7eb139b4f95.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c37f7b5daa99a468d8943b49459730b.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed1e9cdd5a82f29ec89b2c53b4fa6f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060f4956a4bf2bb97597c845e0b322fb.png)
(3)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/021bcc5ea186cd32c39b3d333b0f448c.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/fd1ca32fac5694537b56f9f528d2dae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94fe48bf7af022ecbbe13833fdcc2c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2021-03-06更新
|
1443次组卷
|
4卷引用:广东省珠海市2021届高三下学期第一次学业质量检测数学试题
2 . 如图,在四棱台ABCD-A1B1C1D1中,底面ABCD是菱形,∠ABC=
,∠B1BD=
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58df8d911935cca1738567b656c8e3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41430e9e5f22c2330333613390612fb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/4ee63947-6239-496a-88ad-5660c468f68e.png?resizew=179)
(1)求证:直线AC⊥平面BDB1;
(2)求直线A1B1与平面ACC1所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58df8d911935cca1738567b656c8e3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41430e9e5f22c2330333613390612fb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/4ee63947-6239-496a-88ad-5660c468f68e.png?resizew=179)
(1)求证:直线AC⊥平面BDB1;
(2)求直线A1B1与平面ACC1所成角的正弦值.
您最近一年使用:0次
2020-03-19更新
|
5188次组卷
|
10卷引用:广东省中山市2023-2024学年高二上学期期末统一考试数学试题
广东省中山市2023-2024学年高二上学期期末统一考试数学试题2020届浙江省名校协作体高三下学期3月第二次联考数学试题安徽省合肥一中2020-2021学年高二上学期10月段考数学(理)试题山东省齐鲁2021-2022学年3月份高一阶段性质量检测试卷A福建省福州格致中学2022届高三数学模拟试题湖北省九校教研协作体2022-2023学年高二上学期9月联考数学试题湖北省温德克英联盟2023-2024学年高二8月开学综合性难度选拔考试数学试题(已下线)重难点突破06 立体几何解答题最全归纳总结(九大题型)-22024年全国普通高中九省联考仿真模拟数学试题(三)湖南省岳阳市第一中学2023-2024学年高三下学期开学考试数学试题
3 . 在棱长为2的正方体
中,点
是正方体棱上一点,
.
①若
,则满足条件的点
的个数为______ ;
②若满足
的点
的个数为6,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f7aa9a95bb1dc23472b8132472670c.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4338dd5d6ac02dbb9d5069eb98f436d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②若满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f7aa9a95bb1dc23472b8132472670c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
名校
4 . 已知椭圆
的长轴长为
,离心率为
.
![](https://img.xkw.com/dksih/QBM/2017/2/21/1628719059648512/1628920019746816/STEM/8fba4f96-01f4-426a-9c4e-840b3319cfb8.png?resizew=221)
(1)求椭圆
的方程;
(2)
为椭圆
上任意一点,过点
的直线
交椭圆
于
两点,射线
交椭圆
于点
(
为坐标原点).①是否存在常数
,使得
恒成立?若存在,求出
的值,否则,请说明理由;②求
面积的最大值,并写出取最大值时
与
的等量关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae13b2a96f91ab64fb4948de2b0ae10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78c38805c09dcfbcc42103308975a74.png)
![](https://img.xkw.com/dksih/QBM/2017/2/21/1628719059648512/1628920019746816/STEM/8fba4f96-01f4-426a-9c4e-840b3319cfb8.png?resizew=221)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7895aece9dd5a90424879ea9184037a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91570f6a5d4fdf7c757212083f2f06af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b73be30f639b301cf797d6e8d04a568d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ecb1589c3cc179e2f62507020771e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186354626d5a1d13b88dfb4df916947b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c49a88fd5ecdd45767803fdaddd0832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab52437119a48617266b336c1d2d5a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
5 . 椭圆E:
+
=1(a>b>0)的左焦点为F1,右焦点为F2,离心率e=
.过F1的直线交椭圆于A,B两点,且△ABF2的周长为8.
(1)求椭圆E的方程.
(2)在椭圆E上,是否存在点M(m,n)使得直线l:mx+ny=1与圆O:x2+y2=1相交于不同的两点P,Q,且△POQ的面积最大?若存在,求出点M的坐标及相对应的△POQ的面积;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2016/3/17/1572544751599616/1572544757235712/STEM/b736922adb854087b12583853ceba036.png)
![](https://img.xkw.com/dksih/QBM/2016/3/17/1572544751599616/1572544757235712/STEM/d7337e1193d44654a9dbe8d33f8bcf05.png)
![](https://img.xkw.com/dksih/QBM/2016/3/17/1572544751599616/1572544757235712/STEM/fa76b58355c14591935653eb0f96639b.png)
(1)求椭圆E的方程.
(2)在椭圆E上,是否存在点M(m,n)使得直线l:mx+ny=1与圆O:x2+y2=1相交于不同的两点P,Q,且△POQ的面积最大?若存在,求出点M的坐标及相对应的△POQ的面积;若不存在,请说明理由.
您最近一年使用:0次
6 . 已知椭圆C的焦点坐标为F1(﹣2,0)和F2(2,0),一个短轴顶点
.
(1)求椭圆C的标准方程;
(2)已知过F1的直线与椭圆相交于A、B,倾斜角为45度,求△ABF2的面积.
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572532943994880/1572532949852160/STEM/0bd31305b4034aa18a48116c7da6b719.png)
(1)求椭圆C的标准方程;
(2)已知过F1的直线与椭圆相交于A、B,倾斜角为45度,求△ABF2的面积.
您最近一年使用:0次
7 . 已知曲线
上的点到点
的距离比它到直线
的距离小2.
(1)求曲线
的方程;
(2)曲线
在点
处的切线
与
轴交于点
.直线
分别与直线
及
轴交于点
,以
为直径作圆
,过点
作圆
的切线,切点为
,试探究:当点
在曲线
上运动(点
与原点不重合)时,线段
的长度是否发生变化?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6b27da5da992993b9bfe948efc604b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5421a28dc3675ae20190d6090793246e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3157d944f757c182d76bcd6f8eac076.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6b27da5da992993b9bfe948efc604b.png)
(2)曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6b27da5da992993b9bfe948efc604b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9355031ea0b2dc9cef3777621bc6d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6b27da5da992993b9bfe948efc604b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2016-12-03更新
|
5592次组卷
|
4卷引用:广东省茂名地区2019-2020学年高二上学期期末数学试题
广东省茂名地区2019-2020学年高二上学期期末数学试题2014年全国普通高等学校招生统一考试文科数学(福建卷)(已下线)专题26 求动点轨迹方程 微点2 定义法求动点的轨迹方程(已下线)专题24 解析几何解答题(文科)-2
2011·广东汕头·一模
8 . 给定椭圆
:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
,称圆心在坐标原点
,半径为
的圆是椭圆
的“伴随圆”. 已知椭圆
的两个焦点分别是
,椭圆
上一动点
满足
.
(Ⅰ)求椭圆
及其“伴随圆”的方程;
(Ⅱ)过点P![](https://img.xkw.com/dksih/QBM/2012/6/20/1570895025635328/1570895030804480/STEM/cac1efe1d8af48b5a2b4710cabdc54fd.png)
作直线
,使得直线
与椭圆
只有一个交点,且
截椭圆
的“伴随圆”所得的弦长为
.求出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14da046679a4d8064a45648b3f5b9e46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da001dad7941e6c9858637d7b62cec59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/336895a657570cae4b0f993352f2ae72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3039fa5c52be74557ebe9f18e0d3b2f8.png)
(Ⅰ)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)过点P
![](https://img.xkw.com/dksih/QBM/2012/6/20/1570895025635328/1570895030804480/STEM/cac1efe1d8af48b5a2b4710cabdc54fd.png)
![](https://img.xkw.com/dksih/QBM/2012/6/20/1570895025635328/1570895030804480/STEM/4fcdae6d674d4dbc88d379adbf11cda7.png)
![](https://img.xkw.com/dksih/QBM/2012/6/20/1570895025635328/1570895030804480/STEM/0734e8659d8d48f2a7016ced4644f549.png)
![](https://img.xkw.com/dksih/QBM/2012/6/20/1570895025635328/1570895030804480/STEM/0734e8659d8d48f2a7016ced4644f549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2012/6/20/1570895025635328/1570895030804480/STEM/0734e8659d8d48f2a7016ced4644f549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2012/6/20/1570895025635328/1570895030804480/STEM/1494b6ce4d4740d099ab31f6d8e314e4.png)
![](https://img.xkw.com/dksih/QBM/2012/6/20/1570895025635328/1570895030804480/STEM/17d1c5e60d09446d9dd9b8ce4986d146.png)
您最近一年使用:0次
12-13高二上·广东湛江·期末
9 . 已知椭圆
经过点
,O为坐标原点,平行于OM的直线l在y轴上的截距为
.
(1)当
时,判断直线l与椭圆的位置关系(写出结论,不需证明);
(2)当
时,P为椭圆上的动点,求点P到直线l距离的最小值;
(3)如图,当l交椭圆于A、B两个不同点时,求证:直线MA、MB与x轴始终围成一个等腰三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a667af488582538fc08d8e454d5543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bea681006f614f8a070e9c6a942c04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41b8856f1acaf13e6968f0a96f37795.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f7bc699f2bf19dd5a7635375cd3c8e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f7bc699f2bf19dd5a7635375cd3c8e.png)
(3)如图,当l交椭圆于A、B两个不同点时,求证:直线MA、MB与x轴始终围成一个等腰三角形.
![](https://img.xkw.com/dksih/QBM/2012/1/16/1570692813488128/1570692819148800/STEM/c8ea6302-eb33-4b32-834e-0c3f11680e2c.png?resizew=221)
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