11-12高二上·辽宁锦州·期末
1 . 已知椭圆E的中心在原点,焦点在x轴上,椭圆上的点到焦点的距离的最小值为
,离心率e=
.
(Ⅰ) 求椭圆E的方程;
(Ⅱ) 过点(1,0)作直线
交E于P、Q两点,试问在x轴上是否存在一定点M,使
为定值?若存在,求出定点M的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae95f0959bf4306589689387bdcd3bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89c2c78098fefb4b7959b3e521d7620.png)
(Ⅰ) 求椭圆E的方程;
(Ⅱ) 过点(1,0)作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4264fde7d6686461290499ca9017460b.png)
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解题方法
2 . 在平行六面体
中,
,且所有棱长均为2,则对角线
的长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6ad1b5e545ebd88d6c61bceb4118b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
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2017-11-15更新
|
652次组卷
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8卷引用:山西省运城市2019-2020学年高二上学期期末数学理科试题
山西省运城市2019-2020学年高二上学期期末数学理科试题2015-2016学年广东省肇庆市高二上学期期末考试理科数学试卷贵州省兴义市第八中学2017-2018学年高二上学期期中考试数学(理)试题(已下线)1.2+空间向量基本定理(重点练)-2020-2021学年高二数学十分钟同步课堂专练(人教A版选择性必修第一册)山东省滕州市第一中学2020-2021学年高二9月开学收心考试数学试题(已下线)3.2 空间向量基本定理(重点练)-2020-2021学年高二数学(理)十分钟同步课堂专练(人教A版选修2-1)河北省石家庄师大实验2023-2024学年高二上学期第一次月考数学试题湖南省岳阳市岳阳县第一中学2023-2024学年高二下学期开学数学试题
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3 . 如图(1),在等腰梯形
中,
,
是梯形的高,
,
,现将梯形沿
,
折起,使
且
,得一简单组合体
如 图(2)示,已知
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/2017/4/26/1673973295300608/1736580688248832/STEM/2a3358b418994327ab35ddea867012cc.png?resizew=543)
(1)求证:
平面
;
(2)若直线
与平面
所成角的正切值为
,求平面
与平面
所成的锐二面角大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc2cb75b53fea2d000c4e29a65b8301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058f36d315245b63a811d5c6f348c17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9366db1b71034abbe1a5693689cf1c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.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/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/2017/4/26/1673973295300608/1736580688248832/STEM/2a3358b418994327ab35ddea867012cc.png?resizew=543)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
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2017-07-23更新
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601次组卷
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3卷引用:【校级联考】山西省芮城县2018-2019学年高二上学期期末考试数学(理)试题
名校
4 . 抛物线
的焦点为
,准线为
,
、
是抛物线上的两个动点,且满足
.设线段
的中点
在
上的投影为
,则
的最大值是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ab02803c63e68b7bafacc7ea62647dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c683d0f5034025be78bb6be865c8368a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-04更新
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783次组卷
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13卷引用:【区级联考】山西省运城市盐湖区2017-2018学年高二上学期期末考试数学文试题
【区级联考】山西省运城市盐湖区2017-2018学年高二上学期期末考试数学文试题2015-2016学年山东省潍坊市高二上学期期末理科数学试卷2015-2016学年甘肃省兰州一中高二上期末理科数学试卷2016-2017学年重庆市万州第二高级中学高二上学期期末考试理数试卷2016届四川省绵阳南山中学高三12月月考理科数学试卷2015-2016学年湖北省黄石市有色一中高二下期中理科数学试卷河南省夏邑县第一高级中学2017届高三下学期第七次模拟考试理科数学试题安徽省六安市舒城中学2017-2018学年高二下学期第一次统考(开学考试)数学(文)试题江西省上饶市2018届高三下学期第二次高考模拟数学(文)试题2012年全国高中数学联合竞赛试题安徽省肥东县高级中学2019届高三12月调研考试数学(理)试题【市级联考】四川省峨眉山市2019届高三高考适应性考试数学(理)试题四川省南充市阆中中学2018-2019学年高二6月月考数学(理)试题
5 . 定长为3的线段
的两个端点
分别在
轴,
轴上滑动,动点
满足
.
(1)求点
的轨迹曲线
的方程;
(2)若过点
的直线与曲线
交于
两点,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2d7ec3ab513b8ce3ca2d7bf7b3ad95.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297bc912cb09546db07e4fb6be67af40.png)
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2016-12-04更新
|
528次组卷
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4卷引用:【区级联考】山西省运城市盐湖区2017-2018学年高二上学期期末考试数学文试题
真题
解题方法
6 . 如图,设点 A 和 B 为抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a7d646a77c3dd12b69fbd488b964ad.png)
上原点以外的两个动点,已知
,
.求点 M 的轨迹方程,并说明它表示什么曲线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a7d646a77c3dd12b69fbd488b964ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75de1947893e5c7a4d98d4458398fd6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dd6ec8fa1147280a0eaba74744b2d50.png)
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572533498355712/1572533504450560/STEM/991b9fdb642848d2b56fa2d443de216c.png?resizew=184)
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2016-12-04更新
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6卷引用:2015-2016学年山西省运城市高二上学期期末理科数学试卷
2015-2016学年山西省运城市高二上学期期末理科数学试卷人教版选修2-1:抛物线的概念与性质--课后习题(已下线)专题26 求动点轨迹方程 微点5 参数法求动点的轨迹方程2000年普通高等学校招生考试数学(文)试题(京、皖卷)2000年普通高等学校招生考试数学(理)试题(京、皖卷)(已下线)专题29 圆锥曲线的轨迹问题5种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教A版2019选择性必修第一册)
7 . 在空间直角坐标系中,A(1,2,3),B(2,2,0),则
=
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572533498355712/1572533504040960/STEM/5b6df0535369453d9b8547357a23bbd5.png)
A.(1,0,﹣3) | B.(﹣1,0,3) | C.(3,4,3) | D.(1,0,3) |
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8 . 椭圆
+
=1的离心率是
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572533498355712/1572533504090112/STEM/b09e995f94ca4266b5db7ad216afa39f.png)
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572533498355712/1572533504090112/STEM/69ae0472ad3b48c09004fbc0c19ea594.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 已知
为平面内两定点,过该平面内动点
作直线
的垂线,垂足为
.若
,其中
为常数,则动点
的轨迹不可能是 ( )
![](https://img.xkw.com/dksih/QBM/2013/10/8/1571365753815040/1571365759516672/STEM/a5637bc7f2c14df19a55c250f6fdc511.png)
![](https://img.xkw.com/dksih/QBM/2013/10/8/1571365753815040/1571365759516672/STEM/c0791a5a348b49dab861878819ab5d8f.png)
![](https://img.xkw.com/dksih/QBM/2013/10/8/1571365753815040/1571365759516672/STEM/28c7de763520472798055e877e9317cc.png)
![](https://img.xkw.com/dksih/QBM/2013/10/8/1571365753815040/1571365759516672/STEM/f48da201b77743bc81f42e3c7dc4adaf.png)
![](https://img.xkw.com/dksih/QBM/2013/10/8/1571365753815040/1571365759516672/STEM/f9329e451c10454dbb7be1ef85172c28.png)
![](https://img.xkw.com/dksih/QBM/2013/10/8/1571365753815040/1571365759516672/STEM/2fb68a62a97048fe86a8067c36cb6c50.png)
![](https://img.xkw.com/dksih/QBM/2013/10/8/1571365753815040/1571365759516672/STEM/c0791a5a348b49dab861878819ab5d8f.png)
A.圆 | B.椭圆 | C.抛物线 | D.双曲线 |
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10 . 命题:若点O和点F(-2,0)分别是双曲线
(a>0)的中心和左焦点,点P为双曲线右支上的任意一点,则
的取值范围为
.
判断此命题的真假,若为真命题,请做出证明;若为假命题,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d79a9d7c59c061259eba07baded4941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b2bfb98862f33b23a35e24216e6f47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87ec6f15899f1752b792cc01ec9802d.png)
判断此命题的真假,若为真命题,请做出证明;若为假命题,请说明理由.
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