2010·河南郑州·一模
1 . 棱柱
的所有棱长都等于2,
,平面
平面
,
.
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572587514535936/1572587520581632/STEM/6af4eea778994d1e851f84af66163b44.png)
(1)证明:
;
(2)求二面角
的平面角的余弦值;
(3)在直线
上是否存在点
,使
平面
?若存在,求出点
的位置.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8456cee87c4e22351affc28f3a73a0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bcb872b4cef76b937c60d5d90c37ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1274f239154e194210df1e91c09d861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/972645d45eef899327603f69935257a9.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572587514535936/1572587520581632/STEM/6af4eea778994d1e851f84af66163b44.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69da3ea7d1c32bb65cf5841a144d8ff5.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b68e37486909ea74d0f0e221b31b0266.png)
(3)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c1fa987595dd7f584c4a981af5bd31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee3d1518e197f7f25c341da6b1e3483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2014高三·全国·专题练习
真题
名校
2 . 图,点P(0,﹣1)是椭圆C1:
+
=1(a>b>0)的一个顶点,C1的长轴是圆C2:x2+y2=4的直径,l1,l2是过点P且互相垂直的两条直线,其中l1交圆C2于A、B两点,l2交椭圆C1于另一点D.
(1)求椭圆C1的方程;
(2)求△ABD面积的最大值时直线l1的方程.
![](https://img.xkw.com/dksih/QBM/2014/5/22/1571735286841344/1571735292420096/STEM/3c2821601ce84bca8b7a79507709726c.png)
![](https://img.xkw.com/dksih/QBM/2014/5/22/1571735286841344/1571735292420096/STEM/3449f1076da34784a497c22f1e16cda6.png)
(1)求椭圆C1的方程;
(2)求△ABD面积的最大值时直线l1的方程.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/8f4dc1f1-8109-4870-842c-ac592c4b3303.png?resizew=135)
您最近一年使用:0次
2016-12-03更新
|
5136次组卷
|
6卷引用:吉林省辽源市第五中学校2022-2023学年高二上学期期中数学试题
吉林省辽源市第五中学校2022-2023学年高二上学期期中数学试题(已下线)2014年高考数学(文)二轮复习专题提升训练江苏专用13练习卷2013年普通高等学校招生全国统一考试理科数学(浙江卷)(已下线)2015届广东省实验中学高三上学期第一次段考理科数学试卷黑龙江省海林市朝鲜族中学人教版高中数学选修1-1同步练习:模块终结测评(二)专题07+解析几何-2021高考数学(理)高频考点、热点题型归类强化
2014·四川·一模
3 . 已知椭圆
的离心率是
.
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448979255296/1572448985145344/STEM/addc78e85e7a4e3ca2fd171e13590762.png)
(1)若点
在椭圆上,求椭圆的方程;
(2)若存在过点
的直线
,使点
关于直线
的对称点在椭圆上,求椭圆的焦距的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baeb61f7719ed6e262009aac93e4199f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://img.xkw.com/dksih/QBM/2016/1/20/1572448979255296/1572448985145344/STEM/addc78e85e7a4e3ca2fd171e13590762.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4754fbe523ca63eba3810a3f88f37df3.png)
(2)若存在过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134fc3507b06c25a6cdf06b7ae11f055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
13-14高二下·江苏南京·阶段练习
4 . 已知椭圆
:
的离心率为
,其长轴长与短轴长的和等于6.
(1)求椭圆
的方程;
(2)如图,设椭圆
的上、下顶点分别为
,
,
是椭圆上异于
,
的任意一点,直线
,
分别交
轴于点
,
,若直线
与过点
,
的圆
相切,切点为
,证明:线段
的长为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ec56b59d6f2654570c2b5c4fd13a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)如图,设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800c5e266b4ad8462a46970f0a232d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b053f98b1d05a2043e94eeaefea87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be99fa94a1f3e4964fcc13a14fab9ba5.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be99fa94a1f3e4964fcc13a14fab9ba5.png)
![](https://img.xkw.com/dksih/QBM/2015/12/23/1572388967612416/1572388973895680/STEM/af275c1cb5d6453288a860e8138bb874.png)
您最近一年使用:0次
11-12高二上·江苏扬州·期中
解题方法
5 . 已知椭圆
的离心率为
.
(1)若圆
与椭圆相交于
两点且线段
恰为圆的直径,求椭圆
方程;
(2)设
为过椭圆右焦点
的直线,交椭圆于
两点,且
的倾斜角为
,求
的值;
(3)在(1)的条件下,椭圆
的左右焦点分别为
,点
在直线
上,当
取最大值时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/014b99f5c93a4ce8cd6251c12c1d1b37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc44b01e1e46e63d8fddede69672b406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35dc962d118cd70c761f7870b3e59c2d.png)
(3)在(1)的条件下,椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91edc7e2d4811f5ea6c01284cf00393a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f6ae86d96b27df46acbc74920da0081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d4429d2092905d2996e1102d5f18a3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03d722ac2d8035f3c9d48fc5d50b3742.png)
您最近一年使用:0次
名校
6 . 已知抛物线
:
(
)与椭圆
:
相交所得的弦长为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6ad069e39f9cbc01ede3772df24608.png)
(Ⅰ)求抛物线
的标准方程;
(Ⅱ)设
,
是
上异于原点
的两个不同点,直线
和
的倾斜角分别为
和
,当
,
变化且
为定值
(
)时,证明:直线
恒过定点,并求出该定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0aa23696b63c7d2d2950980a2c8cdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42713147196a377764d8c759c143208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d831e25098066aa3212d8695270de388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6ad069e39f9cbc01ede3772df24608.png)
(Ⅰ)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c62c14a017007a6bdfe25eada9c433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c62c14a017007a6bdfe25eada9c433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e197143a3210c70f87d5147128e80de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ab55147ca5c0f958af43b0637ee31b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8db555926603fef963b1aa0e9111e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2016-10-28更新
|
1732次组卷
|
3卷引用:湖南省衡阳市第八中学2018-2019学年高二上学期期中数学(理)试题