名校
1 . 已知在多面体
中,
,
,
,
,
且平面
平面
.
(1)设点F为线段BC的中点,试证明
平面
;
(2)若直线BE与平面ABC所成的角为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066cd386723885c535ea720f5817847a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0028211551dd418eaaf51dde450f8b73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5545dc3211671941048034af38092fa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236c134aad7d9a21c49c07e924b9a531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8ff58f671a287701011a1b31e67e28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/21/eee2123a-b085-465b-a604-374e6bef3b4f.png?resizew=168)
(1)设点F为线段BC的中点,试证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若直线BE与平面ABC所成的角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd29cc627d76412c236aac6b29fa0fdf.png)
您最近一年使用:0次
2023-09-19更新
|
2020次组卷
|
21卷引用:福建省厦门外国语学校2019-2020学年高三上学期12月月考数学(理)试题
福建省厦门外国语学校2019-2020学年高三上学期12月月考数学(理)试题湖北省“荆、荆、襄、宜四地七校考试联盟2019-2020学年高三上学期10月联考数学(理)试题江西省新余市2019-2020学年高三上学期第四次段考数学(理)试卷陕西省宝鸡市虢镇中学2022-2023学年高三上学期第五次模考理科数学试题重庆市涪陵区部分学校2023-2024学年高二上学期第一次月考数学试题广东省广州市第八十九中学2023-2024学年高二上学期10月月考数学试题重庆市广益中学校2023-2024学年高二上学期10月月考数学试题四川省成都市实验外国语学校2023-2024学年高二上学期第一阶段考试数学试题辽宁省沈阳市第十五中学2023-2024学年高二上学期12月月考数学试题四川省遂宁市蓬溪中学校2023-2024学年高二上学期12月月考数学试题福建师范大学第二附属中学2020届高三上学期期中考试数学(理)试题内蒙古霍林郭勒市第一中学2021-2022学年高二下学期期中考试数学试题河北省唐县第一中学2021-2022学年高二下学期期中数学试题浙江省杭州市、宁波市部分学校2022-2023学年高三下学期4月联考数学试题(已下线)高二上学期期中【常考60题考点专练】(选修一全部内容)-2022-2023学年高二数学考试满分全攻略(人教A版2019选修第一册)河南省开封市五县2023-2024学年高二上学期期中联考数学试题(已下线)第一次月考检测模拟试卷(原卷版)云南省大理州民族中学、怒江州民族中学2024届高三上学期第一次联合考试数学试题四川省宜宾市第四中学校2023-2024学年高二上学期期末数学试题四川省凉山州宁南中学2023-2024学年高二上学期期末模拟数学试题(三)北京市海淀区首都师范大学附属中学2023-2024学年高二上学期期中考试数学试题
名校
解题方法
2 . 已知两定点
,
,点
是平面内的动点,且
,记
的轨迹是
.
(1)求曲线
的方程;
(2)过点
引直线
交曲线
于
两点,点
关于
轴的对称点为
,证明直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5799ad0c7fb4bc6ece18d1eb6ed61d0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad58326883500e654f384dc80c9cc08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891cb797fd38aed9fbab25bae2d00066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.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/1316e31d09f7791d50822b8817968b08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f179ccebf08df42f72bf004e0aca2ae.png)
您最近一年使用:0次
名校
3 . 已知
,
,其中
,函数
与
关于直线
对称.
(1)若函数
在区间
上递增,求a的取值范围;
(2)证明:
;
(3)设
,其中
恒成立,求满足条件的最小正整数b的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f14fa5540d70981547bf96412ae51b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914a49b0d7aedc593a3e87fbab7c31ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f786a5701dc1a8a015e8843c3360151b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300f0e9c8045d986f3b0cb19b63957f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f634c14f984b5594c94c02ae92c6616a.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5970b801f2c75c3e905079e244345e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089a407016a48bd18f7ccb79355e8f1a.png)
您最近一年使用:0次
名校
4 . 如图,在多面体
中,
,四边形
和四边形
是两个全等的等腰梯形.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/03a656dd-10a8-4ef7-8e39-3ffb480a4b2c.png?resizew=152)
(1)求证:四边形
为矩形;
(2)若平面
平面
,
,
,
,求平面
与平面
所成二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e89556992cbfd7043330ac7421d342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10de2459bc376f9a3de90f74cc18ca7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/03a656dd-10a8-4ef7-8e39-3ffb480a4b2c.png?resizew=152)
(1)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2f3df5713a423887c16e6355236372.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c674dc5024374f53920947c4cf4baf11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e1a727ba332984ad857b3d25344d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c3ec174b1ce835cc8737ff6ce57e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
您最近一年使用:0次
名校
解题方法
5 . 如图,在体积为1的三棱柱
中,侧棱
底面ABC,
,
,P为线段AB上的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/6d31510d-aaf3-4cbd-8114-1860a6d51cac.png?resizew=256)
(1)求证:
;
(2)当AP为何值时,二面角
的大小为
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822ba132ca9dd0d4a050659aef3c9b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b9ce838d7f2790addb9fc0107229525.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/6d31510d-aaf3-4cbd-8114-1860a6d51cac.png?resizew=256)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afc8ea17cfc5030733b299598161a9e.png)
(2)当AP为何值时,二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc6198bf1e3ab20ecbd03f46f6e91a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,矩形CDEF和梯形ABCD互相垂直,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/72b37949-9485-4e34-a359-3fe9f1ec1cdf.png?resizew=233)
(1)若
为
中点,求证:
∥平面
;
(2)求平面
与平面
所成锐二面角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d2fd6f0c82e9cb5c5e0ef07d1fe048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ae5f8381ffcce4281a0ca817b82a41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c252a0fe067d434a2b5aeac011b9914.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/72b37949-9485-4e34-a359-3fe9f1ec1cdf.png?resizew=233)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d1eba64530b30116eda7fe30bc081f9.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2194add18a7df1a23cf1554dc2da1b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8257b6bd25104e07b9ad935c0a3aac4.png)
您最近一年使用:0次
名校
7 . 已知函数
.
(1)讨论
的单调区间;
(2)当
且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5982b422c4168ec4b7e238e52b276d.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7b69e93488fcd2a195cb9793e94fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d99b13836d1afbbec124efb3fbfd7582.png)
您最近一年使用:0次
名校
8 . 如图,已知⊙O的直径AB=3,点C为⊙O上异于A,B的一点,
平面ABC,且
,点M为线段VB的中点.
![](https://img.xkw.com/dksih/QBM/2020/2/21/2404029505863680/2404684088008704/STEM/19dae500-57a0-469c-9e1f-f3be64c066ad.png)
(1)求证:
平面VAC;
(2)若AB与平面VAC所成角的余弦值为
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d01592b7e10bf087d1465f9d6899bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df494545dda7eefbcd863cd8b3c9a81.png)
![](https://img.xkw.com/dksih/QBM/2020/2/21/2404029505863680/2404684088008704/STEM/19dae500-57a0-469c-9e1f-f3be64c066ad.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
(2)若AB与平面VAC所成角的余弦值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a99e85631aa0ebd7cbee3ac5a20aa727.png)
您最近一年使用:0次
2020-02-22更新
|
554次组卷
|
2卷引用:福建省厦门双十中学2018-2019学年高二下学期第二次月考数学(理)试题
名校
9 . 将函数
在区间
内的全部极值点按从小到大的顺序排成数列
.
(1)求数列
的通项公式;
(2)设
,数列
的前n项和
,求证:数列
为等比数列,并求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09bce6365596a34ca09b2caf4b10321e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63c6e0c2d16cda7e8b2b8c588adeb8ae.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d0df7481a362785ab2e02f156c7b65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
名校
10 . 如图1,在直角梯形ABCD中,
,
,
,四边形ABEF是正方形.将正方形ABEF沿AB折起到四边形
的位置,使平面
平面ABCD,M为
的中点,如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/fab643db-8bba-4b27-8034-5bf66dfa2f53.png?resizew=421)
(1)求证:
;
(2)求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0facf189b2a3153beb7b9e077d3b1146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0e5697eca3f5205cb7b343648240bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35ebbb99167bf8d1a21b8e32ef923a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a641aef4e86274984172782b0e486b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d17c9e307f559ff7e27c8fbc7e49be1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/fab643db-8bba-4b27-8034-5bf66dfa2f53.png?resizew=421)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901c9e0d6c246c195b65100f3f622899.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9761893b0cc4aee26decca8869bf870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a641aef4e86274984172782b0e486b.png)
您最近一年使用:0次