名校
解题方法
1 . 设正项数列
满足
,且
.
(1)证明:数列
是等差数列,并求数列
的通项公式;
(2)设
,求证:数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81121ab69eba7ae935cee7e0abf04b6f.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce97e30e9baa1f3c2017c9d81b7da19b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306ba3f2982e5eb6eebea26114b49d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105de1b20942840a12712c6795a05e1b.png)
您最近一年使用:0次
2022-11-22更新
|
1626次组卷
|
7卷引用:天津市第二中学2022-2023学年高二上学期12月学情调查数学试题
天津市第二中学2022-2023学年高二上学期12月学情调查数学试题山东省滨州市邹平市第一中学2022-2023学年高三上学期期中考试数学试题山东省淄博市张店区2022-2023学年高三上学期期中数学试题山东省济南市2022-2023学年高三上学期期中数学试题安徽省滁州市定远县育才学校2023届高三上学期期末数学试题(已下线)专题突破卷17 数列求和-2(已下线)山东省济南市2022-2023学年高三上学期期中数学试题变式题19-22
2 . 记
是公差不为0的等差数列
的前
项和,已知
,数列
满足
,且
.
(1)求
的通项公式;
(2)证明数列
是等比数列,并求
的通项公式;
(3)求证:对任意的
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](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/b575a0ea2701c7c70af06b0a990c5bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3567c3d83d7ee8c3acf5b18d7de0a3b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9b0e5214575fdbfbe00302189656f7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907fce0e59f19c1dfcad75aceac9572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)求证:对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dafd98e5b223908b13013c3cacc0386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001edf4ac9a0f18758010ba141739a86.png)
您最近一年使用:0次
2022-05-18更新
|
3410次组卷
|
5卷引用:天津市部分区2022届高三下学期质量调查(二)数学试题
天津市部分区2022届高三下学期质量调查(二)数学试题天津市朱唐庄中学2022届高三线上模拟数学试题(已下线)专题26 数列的通项公式 -2(已下线)专题5 数列 第2讲 数列通项与求和(已下线)第6讲 数列的通项公式的11种题型总结(2)
3 . 已知函数
.
(1)讨论函数
的单调性;
(2)若函数
在
上有且仅有一个零点.
①求证:此零点是
的极值点;
②证明:
.
(本题可能用到的数据为
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc873fc03e6e4d3c4ba02f8b1147b20.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066545d533a4f683794e311d3ccf4f0a.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e49cc0e603c2e4dc6fa35668d7ba8988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
①求证:此零点是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4af0abdcf3ea267f0e0e93cacc3fad2.png)
(本题可能用到的数据为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8bcf50e78e95ef0c6f6d420af6654c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f12a76edbb3e98e3ff41c03401769d1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a50101047632b94dcd5cf8035b093cc5.png)
您最近一年使用:0次
名校
解题方法
4 . 已知函数
在点(
,
)处的切线方程为
.
(1)求a、b;
(2)设曲线y=f(x)与x轴负半轴的交点为P,曲线在点P处的切线方程为y=h(x),求证:对于任意的实数x,都有f(x)≥h(x);
(3)若关于
的方程
有两个实数根
、
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32eaaee345fb3c2941c1700f51ac094d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a32822a106d217ffdec43557a236f786.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0c949fc6c21dd3e7d3f56c97ad8715.png)
(1)求a、b;
(2)设曲线y=f(x)与x轴负半轴的交点为P,曲线在点P处的切线方程为y=h(x),求证:对于任意的实数x,都有f(x)≥h(x);
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d43ee69053dce7e1c0fde08668389b42.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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32cda68b4b1a524acf26e5eb623373b5.png)
您最近一年使用:0次
2022-03-29更新
|
3221次组卷
|
8卷引用:天津市南开中学2022届高三下学期二模数学试题
(已下线)天津市南开中学2022届高三下学期二模数学试题天津市耀华中学2022届高三下学期统练12数学试题天津市南开中学2019-2020学年高三10月月考数学试题天津市第一中学2020-2021学年高三上学期第三次月考数学试题(已下线)第12讲 双变量不等式:剪刀模型-突破2022年新高考数学导数压轴解答题精选精练(已下线)第29讲 割线法证明零点差大于某值,切线法证明零点差小于某值-突破2022年新高考数学导数压轴解答题精选精练(已下线)专题9:双变量问题(已下线)重难点突破06 双变量问题(六大题型)
解题方法
5 . 已知
,
.
(1)求证:
;
(2)求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9199b47c03db11c9bea45ff151372aa.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/676a377807e51b8719824d8258eeac6c.png)
您最近一年使用:0次
名校
解题方法
6 . 如图,
且
,
,
且
,
且
,
平面
,
.
(1)若
为
的中点,
为
的中点,求证:
平面
;
(2)求二面角
的正弦值;
(3)若点
在线段
上,且直线
与平面
所成的角为
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e839ac941e8bf536ff35a12e56c7a400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1989dc6aef61c294690d2105c72e894a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66514e4d9ad91dbc0cc4330de68a29e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddb8a11edd393eafd58d9b886dbc7a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/755d575f0a87f3345e232b66d5956070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cf187bc2ede965870b90757b495f53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b091ee5a8b32424b2b836dde7860c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/16/a5d7f569-8128-41dc-ae62-5c82e4c108f8.png?resizew=140)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a8d99c75180422fecf6d3f3d2910b34.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50cfd99a702ee24f9ef94e4b6f50101f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
您最近一年使用:0次
2023-08-15更新
|
895次组卷
|
4卷引用:天津市天津经济技术开发区第二中学2023届高三上学期期中数学试题
解题方法
7 . 如图,四棱锥
的底面是菱形,平面
底面
,
,
分别是
,
的中点,
,
,
.
(1)求证:
平面
;
(2)求证:
;
(3)求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41df27395020cb225113fa9b31dc628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/17/ac18429b-a5dd-4716-b1e5-40c9c192863e.png?resizew=194)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9d682e5d3cc8573574d8d11636758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8a1ea8fca7c80a86dbe4d85cf9707d.png)
(3)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
解题方法
8 . 已知函数
,
(1)判断
的奇偶性并证明
(2)根据函数单调性的定义证明
在区间(0,+
)上单调递增.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c9b1c8b4e463b2d9e0ef8cdde8287cc.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)根据函数单调性的定义证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/229e67dd9fe978e48c221b0b9dc57f1c.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,在三棱柱
中,底面
是以
为斜边的等腰直角三角形,侧面
为菱形,点
在底面上的投影为
的中点
,且
.
(1)求证:
;
(2)求点
到侧面
的距离;
(3)在线段
上是否存在点
,使得直线
与侧面
所成角的余弦值为
?若存在,请求出
的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/19/72c4c98d-ee41-4e09-9044-82670098fcd2.png?resizew=179)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a382ccd078374f1efebb26a43599e596.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
(3)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27511b095e8e96719af8bc9a7412ac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
您最近一年使用:0次
2023-10-18更新
|
951次组卷
|
9卷引用:天津市梧桐中学2022-2023学年高三上学期期末数学试题
天津市梧桐中学2022-2023学年高三上学期期末数学试题上海市虹口区2023届高考一模数学试题(已下线)专题08 立体几何解答题常考全归类(精讲精练)-1(已下线)专题8-2 立体几何中的角和距离问题(含探索性问题)-3(已下线)6.3.4空间距离的计算(3)上海市行知中学2023-2024学年高二上学期10月月考数学试题(已下线)湖南省长沙市长郡中学2024届高三上学期月考(二)数学试题变式题19-22(已下线)考点13 立体几何中的探究问题 2024届高考数学考点总动员【练】(已下线)专题06 用空间向量研究距离、夹角问题10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)
名校
10 . 如图,在四棱锥
中,底面
是矩形,侧棱
底面
,点E是
的中点,
.
(1)求证:
平面
;
(2)求平面
与平面
夹角的余弦值.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671af0b3a53e6f3d308f4ca9cef47ee9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/82b4ea47-0511-4081-8710-eb9748fd3e7c.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30067b7b236d17af8a462f96a58d11bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2023-09-29更新
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500次组卷
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5卷引用:天津市武清区南蔡村中学2022-2023学年高二上学期10月月考数学试题