1 . 已知正项数列
的前
项和为
,
.
(1)记
,证明:数列
的前
项和
;
(2)若
,求证:数列
为等差数列,并求
的通项公式.
![](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/039e4fe671d61e59b96ee525c9df43e8.png)
(1)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf114725ab617af515bf9d2571402106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9928e46511e601913619a427ded84a3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e7e6e9c815b0716de4f5515e4370f77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25cbe66fe4e84b4022721122baab4a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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2023-08-29更新
|
810次组卷
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3卷引用:浙江省A9协作体2023-2024学年高三上学期暑假返校联考数学试题
名校
解题方法
2 . 已知数列
中
,关于
的函数
有唯一零点,记
.
(1)判断函数
的奇偶性并证明;
(2)求
;
(3)求证:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f4d4fa1b049045d58a9571a0709004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/072010cccaa77474c07b66816ce4ae92.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f4d4fa1b049045d58a9571a0709004.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f8c399c162dbd37d2aa304a4a3a1fd.png)
您最近一年使用:0次
3 . 已知函数
,
,且满足
.
(1)求实数a的取值范围;
(2)求证函数
存在唯一零点;
(3)设
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fb0c7b952731190aea730a9fb18a603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a02872c8c4d0f941ad55b2f88fa58ea.png)
(1)求实数a的取值范围;
(2)求证函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c419949314258c61e4436e16477fa42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a51414243ca45bcca00d14a9865f93.png)
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4 . 如图,四棱锥P﹣ABCD的底面ABCD是正方形,PA⊥底面ABCD,E,F分别是AC,PB的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/199b7b00-5683-468a-92b0-058142ca9096.png?resizew=144)
(1)证明:EF∥平面PCD;
(2)求证:面PBD⊥面PAC;
(3)若PA=AB,求PD与平面PAC所成角的大小.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/199b7b00-5683-468a-92b0-058142ca9096.png?resizew=144)
(1)证明:EF∥平面PCD;
(2)求证:面PBD⊥面PAC;
(3)若PA=AB,求PD与平面PAC所成角的大小.
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5 . 如图,正方形
中,边长为4,
为
中点,
是边
上的动点.将
沿
翻折到
,
沿
翻折到
,
平面
;
(2)设面
面
,求证:
;
(3)若
,连接
,设直线
与平面
所成角为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03a4b95abad9895cce9c2c5c81b11089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/094cdaea0090d45556d38bf1420cf04a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365a785ab5fa2dc8d2fdb07545e3772c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4457b0fbba18bae1cf18cb5947a144c1.png)
(2)设面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b66af1efba9c495ea6273cc06b7f328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ab7bd4b7520525ce61881a052c3f04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ca146d2739723092e254556977f51a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17baac332fe2f27b0ba4f1cfeab1ae45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c157ff302a881c17514534903c575f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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2023-12-18更新
|
1161次组卷
|
6卷引用:浙江省名校协作体2023-2024学年高二下学期开学适应性考试数学试题
浙江省名校协作体2023-2024学年高二下学期开学适应性考试数学试题上海市建平中学2023-2024学年高二上学期第三次阶段学习评估(12月月考)数学试卷(已下线)第八章 立体几何初步(单元重点综合测试)-单元速记·巧练(人教A版2019必修第二册)(已下线)第三章 折叠、旋转与展开 专题一 平面图形的翻折、旋转 微点8 平面图形的翻折、旋转综合训练(已下线)13.2.4 平面与平面的位置关系(2)-【帮课堂】(苏教版2019必修第二册)(已下线)第8章 立体几何初步 单元综合检测(难点)-《重难点题型·高分突破》(人教A版2019必修第二册)
名校
6 . 已知函数
.
(1)当
时,求函数
的单调区间;
(2)当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd8f8ee33ad9ec6b873d82c0a1a3d1f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561800aa679a45da4dbe0e323de1fd59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d752d8db8a05b3ec7312f6ac8b64a07.png)
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2024-02-27更新
|
964次组卷
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3卷引用:浙江省浙南名校联盟2023-2024学年高二下学期返校联考数学试题
名校
解题方法
7 . 已知函数
,且曲线
在点
处的切线斜率为1.
(1)求
的表达式;
(2)若
恒成立,求
的值.
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4224ac66f06515bb53aad2c7d9a75b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3832d863e6cefdfe45cff4319e1fbdb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b387739efd7a170870100f783948d60d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17658ba57a6f979195e76ab36c7d44dd.png)
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2024-02-29更新
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936次组卷
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3卷引用:浙江省新阵地教育联盟浙江十校2024届高三下学期第三次联考(开学考试)数学试题
浙江省新阵地教育联盟浙江十校2024届高三下学期第三次联考(开学考试)数学试题湖北省武汉市第十一中学2023-2024学年高二下学期3月考数学试卷(已下线)压轴题01集合新定义、函数与导数13题型汇总 -1
8 . 在三棱锥
中,
.
平面
;
(2)点
为棱
上,若
与平面
所成角的正弦值为
,求
的长;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7fe408c43f2aa4765f099e1f44ab16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06123e81c41198c76a3335757fac2c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62871bb0dff211fc3bd80f9066c25b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4483fbccb86e51db927f5e7e08e0b044.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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解题方法
9 . 记
的内角
所对的边分别是
,且满足
.
(1)证明:
;
(2)若
的面积为
,求
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36976a79b97531faec39b0e620537410.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc2341245480bed8a9b884330efcab8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1659c6c88c3596b4b3d25db3c95f6d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354f86b608c5fa3641aff877665a992f.png)
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2024-02-29更新
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4卷引用:浙江省新阵地教育联盟浙江十校2024届高三下学期第三次联考(开学考试)数学试题
浙江省新阵地教育联盟浙江十校2024届高三下学期第三次联考(开学考试)数学试题上海市位育中学2023-2024学年高一下学期3月月考数学试卷(已下线)专题1 含正切的解三角形问题(每日一题)(已下线)第9章:解三角形章末重点题型复习-【帮课堂】(人教B版2019必修第四册)
名校
10 . 如图,在三棱锥
中,
平面
,平面
平面
,
,
.
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ee81929c987732fcb379802eeef7a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5fc4ad65b723b6a8da4c8dac154e6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13d28cb7181257cf732af4b615fc47d.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca6d1c5eace748465b2dad5065f5111c.png)
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2024-02-13更新
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4卷引用:浙江省名校协作体2024届高三下学期开学适应性考试数学试题
浙江省名校协作体2024届高三下学期开学适应性考试数学试题山东省临沂市费县2024届高三下学期开学考试数学试题(已下线)专题06 立体几何 第二讲 立体几何中的计算问题(解密讲义)(已下线)专题06 立体几何初步解答题热点题型-《期末真题分类汇编》(江苏专用)