1 . 如图,在四棱台
中,底面
是菱形,
,
,
平面
.
(1)证明:
.
(2)棱
上是否存在一点E,使得二面角
的余弦值为
?若存在,求线段
的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50cb59da6e7882e4328b766777ee15d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/3a816394-77b8-4c6f-ae62-e3e25149cbbb.png?resizew=204)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a382ccd078374f1efebb26a43599e596.png)
(2)棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ad0edb590fa1cc97383714f87cbda6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af46237d7279ffb682d57e4e7b57a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
您最近一年使用:0次
2023-12-28更新
|
596次组卷
|
4卷引用:高二数学开学摸底考01(新高考地区)-2023-2024学年高中下学期开学摸底考试卷
(已下线)高二数学开学摸底考01(新高考地区)-2023-2024学年高中下学期开学摸底考试卷辽宁省辽阳市2023-2024学年高二上学期1月期末考试数学试卷(已下线)第七章 应用空间向量解立体几何问题拓展 专题一 立体几何非常规建系问题 微点3 立体几何非常规建系问题(三)【培优版】江西省“三新”协同教研共同体2023-2024学年高二上学期12月联考数学试卷
名校
解题方法
2 . 已知函数
.
(1)若
在
上单调递减,求
的取值范围;
(2)若
有两个极值点
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cd5cad03de96aa3d9d022ce36d434e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b34154b8cb1212f7b36a696b91df1c9.png)
您最近一年使用:0次
2023-11-28更新
|
605次组卷
|
4卷引用:西藏拉萨市城关区拉萨中学2024届高三第五次月考数学(文)试题
3 . 若数列
的前
项和
满足
.
(1)证明:数列
是等比数列;
(2)设
,记数列
的前
项和为
,证明:对任意的正整数
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d60948fb65e86c170ede4c1cd9fc4f.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c895d4ce5ce82ef9b311b9369b4de11.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40220744c7ec0c805b9828a256cdfda3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da72309d2507e2f5e5ed88d8cc08963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9928e46511e601913619a427ded84a3.png)
您最近一年使用:0次
2023-10-26更新
|
2841次组卷
|
7卷引用:黄金卷03
(已下线)黄金卷03(已下线)黄金卷01上海市行知中学2024届高三上学期10月月考数学试题(已下线)2024年高三模拟押题卷02(已下线)模块四 专题6 大题分类练(数列)基础夯实练(人教A)(已下线)第二篇 “搞定”解答题前3个 专题2 数列解答题【练】高三逆袭之路突破90分上海市浦东新区进才中学2024届高三上学期11月月考数学试题
4 . 已知函数
.
(1)判断函数
的单调性;
(2)已知函数
,其中
,若存在
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec3d05907ba9fbd6fd72f34144c1d1d.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470272f85d0a426c8ed621f785889f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e34f42b3be15518c29e3689c9fe6d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccfb4ecfcd09ce9d668607c2f209238c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5780eb4c477b3344c04f8b93237f6404.png)
您最近一年使用:0次
名校
5 . 如图,矩形ABCD中,
,E为BC的中点,现将
与
折起,使得平面BAE及平面DCE都与平面ADE垂直.
(1)求证:
平面ADE;
(2)求钝二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585288e61871608f6ff8f7e4a0beafbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad09a769a75b107390b9eeccc929f761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/24/a9071304-b2d2-4657-b44d-05006e042109.png?resizew=341)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f8b463fcecf0a757f386db56e074d9.png)
(2)求钝二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a351d71fa01d3f5920e374a8ee7b524.png)
您最近一年使用:0次
2023-09-22更新
|
514次组卷
|
3卷引用:高二数学开学摸底考02(新高考地区)-2023-2024学年高中下学期开学摸底考试卷
(已下线)高二数学开学摸底考02(新高考地区)-2023-2024学年高中下学期开学摸底考试卷辽宁省丹东市凤城市第一中学2023-2024学年高二上学期9月月考数学试题重庆市第十八中学2023-2024学年高二上学期期末模拟数学试题(A卷)
名校
解题方法
6 . 如图,在直三棱柱
中,
,
,D为
的中点.
;
(2)若点
到平面
的距离为
,求平面
与平面
的夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d331850e91390d587ccddcb892f977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ed4b84d38a6c0916bc4ac92f011e8e.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
您最近一年使用:0次
2023-11-10更新
|
1049次组卷
|
5卷引用:黄金卷03
解题方法
7 . 设
,函数
.
(1)求a的值,使得
为奇函数;
(2)求证:
时,函数
在R上单调递减.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fcc4985dd58223622822ebb759a3e3.png)
(1)求a的值,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24505cd5c1d84ecb57404c645ea44c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fcc4985dd58223622822ebb759a3e3.png)
您最近一年使用:0次
2023-02-08更新
|
654次组卷
|
4卷引用:高一数学开学摸底考02-新高考地区开学摸底考试卷
(已下线)高一数学开学摸底考02-新高考地区开学摸底考试卷2023年辽宁省沈阳市普通高中学业水平合格性考试数学模拟一湖南省衡阳市衡阳县第二中学2023-2024学年高一上学期期末达标测试数学试题(A卷)内蒙古自治区科尔沁2023-2024学年高一上学期期末综合测试数学试题( 一)
名校
解题方法
8 . 若函数
和
的图象均连续不断.
和
均在任意的区间上不恒为
的定义域为
的定义域为
,存在非空区间
,满足
,则称区间A为
和
的“
区间”.
(1)写出
和
在
上的一个
区间”(无需证明);
(2)若
是
和
的“
区间”,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80f04f48040becbe5c906fc0f7eba4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dba8b8c37d039197ec051e732da5bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1a0fd1ad044a9ecfcba672779bd678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cd4adaf169a82c0ec20b1d71eea8b95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5017cde801c0d0914137e02e61272786.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6263576e5c3f2324a8dac311476bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375c0821fd7bf942481fbc75ddd4c1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306bfbc7ac378f6a0c2d6adab6a4aa6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-02-18更新
|
152次组卷
|
4卷引用:高一数学开学摸底考02-新高考地区开学摸底考试卷
(已下线)高一数学开学摸底考02-新高考地区开学摸底考试卷山西省忻州市河曲县中学校2022-2023学年高一下学期开学考试数学试题山西省忻州市2022-2023学年高一下学期开学考试数学试题湖南省衡阳市衡阳县第二中学2023-2024学年高一上学期期末达标测试数学试题(A卷)
9 . 如图,在三棱锥
中,
平面
,
,
,
为
的中点.
平面
;
(2)求平面
与平面
所成二面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558332924d8593bdcd3ad170b8eca146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2022-03-28更新
|
321次组卷
|
6卷引用:西藏山南市普通高中2023-2024学年高二上学期期末考试数学试题
名校
解题方法
10 . 已知抛物线
的焦点为F,过焦点F的直线与抛物线C相交于A,B两点,O为坐标原点.
(1)求
的值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34777545c0fda31f30b6399086c65b5f.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a6d99f2de1050ec83da3fff07ce227.png)
您最近一年使用:0次
2021-12-17更新
|
116次组卷
|
3卷引用:西藏山南市普通高中2023-2024学年高二上学期期末考试数学试题
西藏山南市普通高中2023-2024学年高二上学期期末考试数学试题湖南省郴州市嘉禾县第一中学2021-2022学年高二上学期12月月考数学试题(已下线)专题3.1 选修一+选修二第四章数列(易)-【满分计划】2021-2022学年高二数学阶段性复习测试卷(人教A版2019选择性必修第二册)