1 . (1)求证:
(其中
)
(2)已知
、
、
、
都是实数,且
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2753dee1cf2935ce2f46ef406fc0e15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a671406a5442a3088a4ee1d064114a.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04959523a28786962d51cfb43a8767d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70a92f426264c24f324cab3dc8017f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0950c6ba9c0ff6b53f9231a7eec44d1.png)
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解题方法
2 . 已知数列
的前n项和为
,
,
.
(1)求证:
;
(2)若
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9453353c91d49cd679404ede7754d9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b721c8719c8a79eaa1708a5c861fa7.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661eb98b215405edbdc6434ce55b89cf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18290605c9bf894efc7b721449702c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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解题方法
3 . 如图,在正四棱锥
中,
为底面中心,
,
,
为
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/8dccda02-0d07-498c-b0ba-8038d9f0bc23.png?resizew=176)
(1)求证:
平面
;
(2)求:直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6834ac70927ae08d7d36a1922403c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764829cc2c763b6aca0665aa143e304e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a792913ec98992fc7feb7ea63aa38b0f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/24/8dccda02-0d07-498c-b0ba-8038d9f0bc23.png?resizew=176)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0457394ce4f2dc8d940c565c94dcf557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
(2)求:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
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4 . 已知数列
的前
项和为
,且
为等差数列.
(1)证明:
为等差数列;
(2)若
,数列
满足
,且
,求数列
的前
项和
.
![](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/d3768db0f2e2881b810d44ddc39ff295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dea1dd4ffcb4cf0697ca43079f6a1f2.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1dfe5b322577f02fd19caab8cf20170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a8d7ec3afb812286ad33dd69d80c99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c24437f62e6fab6d8baf7060f5c8ddd.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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5 . 用数学归纳法证明:
时,从
到
,等式的左边需要增乘的代数式是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128a2ea4267cfb0388abd887347e2103.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef7ca2b3e8061384501f668e59696a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ba21f3d0cfc86d40e2e06446623ce0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-02-11更新
|
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5卷引用:南阳六校2021-2022学年下学期第一次联考高二理科数学试题
南阳六校2021-2022学年下学期第一次联考高二理科数学试题(已下线)5.5 数学归纳法(2知识点+6题型+强化训练)-【帮课堂】2023-2024学年高二数学同步学与练(人教B版2019选择性必修第三册)河南省南阳市第一中学校2023-2024学年高二下学期第一次月考数学试题辽宁省沈阳市第二十中学2023-2024学年高二下学期4月阶段测试数学试卷(已下线)4.4数学归纳法——课堂例题
6 . 非零数列
满足
,且
.
(1)设
,证明:数列
是等差数列;
(2)设
,求
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b613d5800d61f4a25c7c739d680292dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cefeddf71dca8ae824328df3f0e5e1e.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee3cf29d889864199a6db7b1685f179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca857b7a6a1fe09827ecaa5f4c036069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab0309e2cd35585ea9fb2cc3017abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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7 . 如图,在正四棱锥
中,O为底面中心,
,
,M为PO的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/d256fc2b-4d83-42d5-8ea4-11f8db8d066b.png?resizew=217)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
平面EAC;
(2)求:(i)直线DM到平面EAC的距离;
(ii)求直线MA与平面EAC所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6834ac70927ae08d7d36a1922403c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764829cc2c763b6aca0665aa143e304e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a792913ec98992fc7feb7ea63aa38b0f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/21/d256fc2b-4d83-42d5-8ea4-11f8db8d066b.png?resizew=217)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
(2)求:(i)直线DM到平面EAC的距离;
(ii)求直线MA与平面EAC所成角的正弦值.
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3卷引用:高二文数试题-河南省豫南六校2022-2023学年高二上学期第二次联考试题
8 . 如图,四棱锥
中,
,
,
,且
.
![](https://img.xkw.com/dksih/QBM/2022/12/19/3134141471793152/3135571658416128/STEM/a7dbec421af34244b69cc2f68b090e1e.png?resizew=222)
(1)求证:直线
平面
;
(2)若直线
与平面
所成的角为
,求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c74f1828d17c2059a2966fe960757541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50787ea6e991852b1070e8e1c930df7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af620f6d204d310d8e3f267fdd6c3f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d9ef979b9f27a28cbda6923e888ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a405b8ed5ac9fb2edc41228bbf5347b4.png)
![](https://img.xkw.com/dksih/QBM/2022/12/19/3134141471793152/3135571658416128/STEM/a7dbec421af34244b69cc2f68b090e1e.png?resizew=222)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e4f7bbff499143cef82c65d2b20a27.png)
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2卷引用:高二文数试题-河南省豫南六校2022-2023学年高二上学期第二次联考试题
名校
9 . 如图1,矩形ABCD,点E,F分别是线段AB,CD的中点,
,将矩形ABCD沿EF翻折.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/f4289d06-b7a3-440e-9930-5d299e03ba32.png?resizew=398)
(1)若所成二面角的大小为
(如图2),求证:直线
面DBF;
(2)若所成二面角的大小为
(如图3),点M在线段AD上,当直线BE与面EMC所成角为
时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b58022e20e4bd2a6c25f3f3a2d14fb76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/f4289d06-b7a3-440e-9930-5d299e03ba32.png?resizew=398)
(1)若所成二面角的大小为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
(2)若所成二面角的大小为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/055617fcb090f104b4d163cf8fd99827.png)
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6卷引用:高二理数试题-河南省豫南六校2022-2023学年高二上学期第二次联考试题
高二理数试题-河南省豫南六校2022-2023学年高二上学期第二次联考试题(已下线)回归教材重难点03 空间向量与立体几何-【查漏补缺】2022年高考数学(理)三轮冲刺过关(已下线)数学-2022年高考押题预测卷03(新高考卷)(已下线)新高考卷04黑龙江省哈尔滨市第三中学2022届高三第二次模拟考试理科数学试题湖北省宜昌市夷陵中学2022届高三下学期5月四模数学试题
名校
10 . 已知函数
.
(1)求函数
的单调区间;
(2)已知
,
,(其中
是自然对数的底数),求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b26f55c7c29644dfe0277d3e2adf10.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18478e45096362e297359fe9345b073a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fd5a05aae4f1a7d8a8e32e80ca7263.png)
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2016-12-03更新
|
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6卷引用:南阳六校2021-2022学年下学期第一次联考高二理科数学试题