2022·全国·模拟预测
名校
解题方法
1 . 已知
为等比数列
的前n项和,若
,
,
成等差数列,且
.
(1)求数列
的通项公式;
(2)若
,且数列
的前n项和为
,证明:
.
![](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/e4b32aee86109b777671cd62868db3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86e2e42b4aa93db9241103e7f61766c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3fc854e1dd70727f12571df8c4a54c9.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/716d59cee712c22885b6608848980b75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8195c685bcd7d2a14675625beec0d027.png)
您最近一年使用:0次
2022-12-05更新
|
4280次组卷
|
13卷引用:吉林省白山市抚松县第一中学2023届高考模拟预测数学试题
吉林省白山市抚松县第一中学2023届高考模拟预测数学试题吉林省通化市梅河口市第五中学2023-2024学年高三上学期9月月考数学试题(已下线)2023年普通高等学校招生全国统一考试数学领航卷(二)(已下线)专题05 数列放缩(精讲精练)-1云南省昆明市第三中学2023届高三上学期12月月考数学试题(已下线)新高考卷04四川省江油市太白中学2022-2023学年高三下学期高考模拟(三)数学试题山西省山西大学附属中学2024届高三上学期9月月考(总第三次)数学试题四川省眉山市仁寿县仁寿县铧强中学2023-2024学年高三上学期10月月考数学试题四川省眉山市仁寿县铧强中学2023-2024学年高三上学期10月诊断性考试文科数学试题湖南省邵阳市邵东一中2024届高三上学期第四次月考数学试题安徽省淮北市树人高级中学2023-2024学年高二上学期12月阶段测试数学试题福建省龙岩市第一中学2024届高三上学期第三次月考数学试题
名校
解题方法
2 . 记
的内角A,B,C的对边分别为a,b,c,分别以a,b,c为直径的三个半圆的面积依次为
,
,
.
(1)若
,证明:
;
(2)若
,且
的面积为
,
,求b.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/073dd017ec6e41fa8bc105355037010d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f67985b822b482f804d56d5df049f15.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/544c8e70d47910c535a4bef844282be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec33b3ab96553ff4d05d26db0c6dfba3.png)
您最近一年使用:0次
名校
解题方法
3 . 已知
的内角A、B、C所对的边分别为a、b、c,且满足
.
(1)证明:
;
(2)若
,
,求a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1338a3ce1c6ee373db76d7babb2f11c.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f44c181a2f6ae22d5d52b374768dc57.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82986ab38a4ae58593191ccae2a44f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b97bb18e5ca34d22b5e827316a122a.png)
您最近一年使用:0次
4 . 已知数列
和
满足
,
,
,
.
(1)证明:
是等比数列;
(2)求数列
的前n项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87ea014220aa658c8baa6e1f43e686a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13718b9b60c2f63cfc674d591a6b55c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e194239f62ee3833bd32a2d27defae3.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec12a9a60f82467bf7bf834a9a9b1f7.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
您最近一年使用:0次
名校
解题方法
5 . 已知数列
中,
,
.
(1)证明:数列
为等比数列;
(2)设
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0abbc453bbe66c0ee6cc56ae23f12f.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2de706dc5f0439b989273a5367f63a.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94e22de952e2b63bb9a750a77200d77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da72309d2507e2f5e5ed88d8cc08963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2022-05-10更新
|
1208次组卷
|
5卷引用:吉林省长春市2022届高三下学期质量监测(四)数学文科试题
6 . 已知数列
的前
项
.
(1)求数列
的通项公式;
(2)设
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e7c1a9924023ce408b249a32dfd7fe0.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd87eb57d157e9a790245eb82d3a5f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce6ae3d06eb1ee79e87ef6c86080bca.png)
您最近一年使用:0次
2022-03-22更新
|
1294次组卷
|
8卷引用:吉林省长春市普通高中2018届高三质量监测(一) 数学(理科)试题
7 . 已知数列
中,
,
,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da5f0830ac5904b41178de4df711a468.png)
.
(1)设
,证明:
是等差数列;
(2)若
,求数列
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/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da5f0830ac5904b41178de4df711a468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5e07bf129b073f37b553fbca100172.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef38340444f553e32eb9f5bfacc1f3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1503dcdc8c0b7d1a52004363b498d4bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a74d3dbe3291903363365c30a4ab834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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2022-01-27更新
|
440次组卷
|
9卷引用:吉林省东北师范大学附属中学2022届高三下理科数学第六次练习试题
吉林省东北师范大学附属中学2022届高三下理科数学第六次练习试题山西省太原市2021届高三二模数学(理)试题(已下线)押新高考第18题 数列-备战2021年高考数学临考题号押题(新高考专用)(已下线)押第17题 数列-备战2021年高考数学(文)临考题号押题(全国卷1)(已下线)第七章 数列专练9—错位相减求和(大题)-2022届高三数学一轮复习(已下线)专题3.3 数列的综合问题(常规型)-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)2021年全国新高考Ⅰ卷数学试题变式题13-17题湖北省武汉市江岸区2021-2022学年高三上学期元月期末数学试题河北省石家庄二中实验学校2021-2022学年高二下学期4月月考数学试题
名校
解题方法
8 . 已知数列
为等差数列,
是数列
的前
项和,且
,
,数列
满足:
,当
时,
.
(1)求数列
,
的通项公式;
(2)令
,证明:
.
![](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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da12d94796c46513c3bab925b9ce229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0a30ee33d5c1ba27228fbdf66943823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a49e096ceb5cb120ec942f50e14885ff.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a8cd9b028ba9e5d70712133350d1b55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1badffaa2cef604b6685e3387cb03bf7.png)
您最近一年使用:0次
2021-11-12更新
|
424次组卷
|
7卷引用:吉林省吉林市2020届高三第四次调研测试数学(理)试题
9 . 已知数列
满足
,
.
(1)若数列
满足
,求证:
是等比数列;
(2)求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f4e1236d7dc0366d9523d0cbb426be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/415f4d68b45762978aeb94fcf1f669c2.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0267d117cde8ccec5cb7c7043e8f130e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2021-11-12更新
|
1988次组卷
|
9卷引用:2017届吉林省长春市普通高中高三下学期第二次模拟考试数学(文)试卷
2017届吉林省长春市普通高中高三下学期第二次模拟考试数学(文)试卷河北省大名县第一中学2018届高三(实验班)上学期第一次月考数学(文)试题甘肃省甘谷县第一中学2017-2018学年高二上学期第一次月考文科数学试题2018年高考数学(理科,通用版)练酷专题二轮复习课时跟踪检测:(十八) 数 列【市级联考】河南省南阳市2019届高三上学期期中考试数学文试题陕西省延安市吴起县高级中学2019-2020学年高二上学期期中数学(文)试题新疆兵团第十二师高级中学2022届高三上学期第二次月考数学(文)试题(已下线)专题15 数列构造求解析式必刷100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)广东省清远市连南瑶族自治县大坪镇大坪中学2020-2021学年高二上学期期末数学试题
10 . 已知数列{an}是等比数列,Sn为数列{an}的前n项和,a3=3,S3=9.
(1)求数列{an}的通项公式;
(2)设
,{bn}为递增数列,若
,求证:c1+c2+c3+…+cn<1.
(1)求数列{an}的通项公式;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6044f99f2803c123eb7d505f40d2173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc56e70935359845a746d435bc835d4.png)
您最近一年使用:0次
2020-11-16更新
|
422次组卷
|
8卷引用:2017届吉林省吉林市普通中学高三毕业班第二次调研测试数学(理)试卷