1 . 已知四棱锥
的底面
是边长为2的正方形,E是
的中点,且
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/12b18095-d6a8-45ad-b01e-2ba0fefef324.png?resizew=157)
(1)证明:平面
平面
;
(2)在棱
上是否存在点F(不含端点),使得平面
与平面
的夹角的余弦值为
?如果存在,求
的长;如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3ad66112b09c909cab417085702ec00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0f73b3c63084d9c032802e01f9a168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a5c856b02488d7e4f6d6d1484720cb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/12b18095-d6a8-45ad-b01e-2ba0fefef324.png?resizew=157)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d246f9eceab371ebf47a47c2f11a4ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a69d166677557cadb3da32b4a7e152e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
您最近一年使用:0次
名校
解题方法
2 . 已知函数
,
.
(1)求
的单调区间;
(2)当
时,
,求
的取值范围;
(3)证明:
,
且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d71215f397a7555ae415edfb648d0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c76725484b4b7cc1771ff37ccff3721.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636289ad84b4a3a51095dd32ca201f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4955c5adc717b7f6f0b975e0724ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27696cafdc8f66a57ffac11171c76c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
您最近一年使用:0次
3 . 已知函数
.
(1)若
,求证:
;
(2)若函数
在
处取得极大值,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6ffae39f71fe2bebfa87fd627a808b5.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-11-24更新
|
331次组卷
|
3卷引用:云南省楚雄市东兴中学2024届高三上学期12月月考数学试题
名校
解题方法
4 . 如图,在直四棱柱
中,底面四边形
是边长为2的正方形,
,点
,
分别为棱
,
的中点.
(1)证明:
平面
;
(2)求二面角
的余弦值.
![](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/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/6c18db86-63c7-46e8-9c21-9965f98c2527.png?resizew=129)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3fcc14ec67dc9a10bee27b3b700ea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f6b1a6adac644c48cab9ec4d392a152.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecec1c6a7ac4632c13976db358bcb05e.png)
您最近一年使用:0次
名校
5 . 已知函数
,
.
(1)求
的单调区间;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc1e1eda1e062dc9c898622072f0495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1610bcd07b02c4ed7184ad586b88f373.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375d897a1f137d6c6704d24f9b4b0948.png)
您最近一年使用:0次
2023-11-15更新
|
385次组卷
|
5卷引用:云南省楚雄州2024届高三上学期期中教育学业质量监测数学试题
名校
解题方法
6 . 已知函数
的定义域为
,且对任意的正实数
、
都有
,且当
时,
,
.
(1)求证:
;
(2)求
;
(3)解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc03f89640a187a000a2378e3a3fea22.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/8a76b6b2769bc8af45e408bf9eb40fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c6cf9152e0d02b83eb22b01722d29c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a62d05b375bf2ae5edeea9aaa482dbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576cb563373b2bf3921640cbcebb79c9.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a658915c7121b2963fdcaabdaceb88.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb28245137a0d2d9e3b2b39d22bdab2b.png)
(3)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9653506ad4280b8c1f50dda4484e54.png)
您最近一年使用:0次
2023-12-20更新
|
492次组卷
|
16卷引用:云南省大姚县第一中学2020-2021学年高一数学上学期期末测数学试题
云南省大姚县第一中学2020-2021学年高一数学上学期期末测数学试题(已下线)第3章 函数概念与性质 章末测试(基础)-2021-2022学年高一数学一隅三反系列(人教A版2019必修第一册)(已下线)专题21 3.2 函数的单调性 - 2021-2022高一上学期数学新教材配套提升训练(人教B版2019必修第一册)(已下线)第2讲 函数的单调性与最值、奇偶性(考点讲解+分层训练)-2021-2022学年高一数学考点专项训练(人教A版2019必修第一册)(已下线)专题3.5 函数的概念与性质章节测试(A)-《聚能闯关》2021-2022学年高一数学提优闯关训练(人教A版2019必修第一册)河南省南阳市社旗县第一高级中学2021-2022学年高一(实验班)上学期入学测试数学试题广东省中山市小榄中学2021-2022学年高一上学期第一次段考数学试题广东省佛山市北外附校三水外国语学校2022-2023学年高一上学期期中数学试题陕西省西安高新唐南中学2022-2023年高一上学期期中数学试题河北省魏县第五中学2023届高三上学期期中数学试题河南省周口市沈丘县长安高级中学2022-2023学年高一上学期期中数学试题河北省廊坊第十二中学2022-2023学年高一上学期期末数学试题(已下线)高一上学期期末复习【第三章 函数的概念与性质】十大题型归纳(拔尖篇)-举一反三系列(已下线)第3章 函数-【高中数学课堂】单元测试能力卷(人教B版2019)北京市丰台区怡海中学2023-2024学年高一上学期期末模拟练习数学试题(已下线)高一上学期期末数学考试模拟卷-【题型分类归纳】(人教A版2019必修第一册)
名校
解题方法
7 . 已知函数
.
(1)若
,证明:
;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca363d8c80353bf5de40efd1c2680f01.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
8 . 如图,在圆锥
中,
是底面圆的直径,C,D是圆
上的两点,
,
,
为母线
上的一点.
(1)证明:平面
平面
.
(2)若直线
与平面
所成角的正弦值为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69530c933e0a48573a5dd97a5f5a419e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/15ac38ee-602c-49af-8403-d15294ff14aa.png?resizew=146)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da05ded8b60b97142b4d975ffe782c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802e162b98c280720fcb909cf392fda3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a56f51a6312441f9f07daf7e62ff41.png)
您最近一年使用:0次
2023-11-13更新
|
217次组卷
|
2卷引用:云南省楚雄州2023-2024学年高二上学期期中教育学业质量监测数学试题
解题方法
9 . 如图,在直三棱柱
中,
,
,P,Q,R分别是
,
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/4510c3b9-50ae-4d7b-90e4-78f5cadf16b2.png?resizew=181)
(1)证明:
平面
.
(2)求
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b741da00f6d5a6170f19a2c1d038bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2b29fee2f6e89c7f4ff17f7c6545bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/4510c3b9-50ae-4d7b-90e4-78f5cadf16b2.png?resizew=181)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72221ee5b504d596ff799c0b356aa0ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dac83f99ecf60629c6b9367b6ed9d72.png)
您最近一年使用:0次
2023-11-13更新
|
209次组卷
|
3卷引用:云南省楚雄州2023-2024学年高二上学期期中教育学业质量监测数学试题
解题方法
10 . 如图,在四棱锥
中,底面ABCD为平行四边形,M为PA的中点,E是PC靠近C的一个三等分点.
(1)若N是PD上的点,
平面ABCD,判断MN与BC的位置关系,并加以证明.
(2)在PB上是否存在一点Q,使
平面BDE成立?若存在,请予以证明,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/23/66fecf24-dadd-4c70-ae8e-7f802e56d4c8.png?resizew=138)
(1)若N是PD上的点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
(2)在PB上是否存在一点Q,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665fa0f8a5c8060bc8d3ba7aadd0dddb.png)
您最近一年使用:0次