1 . 记
(
且
)的展开式中含x项的系数为
,含
项的系数为
.
(1)求
;
(2)若
,对
,3,4成立,求实数a,b,c的值;
(3)对(2)中的实数a,b,c,证明:对任意
且
,
都成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4f819c5714bf76cb6e4cbb5fb64c6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048651e049071a622651832e6446a75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
(3)对(2)中的实数a,b,c,证明:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048651e049071a622651832e6446a75e.png)
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2023-11-01更新
|
236次组卷
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7卷引用:2020届江苏省南通市如皋中学高三下学期3月线上模拟考试数学试题
2020届江苏省南通市如皋中学高三下学期3月线上模拟考试数学试题江苏省常州2018届高三上学期期末数学(理)专题20 数学归纳法及其证明-《巅峰冲刺2020年高考之二轮专项提升》[江苏](已下线)专题07 计数原理-2020-2021学年高二数学下学期期末专项复习(北师大版2019选择性必修第一册、第二册)四川省雅安市天立学校2022-2023学年高二下学期第一次月考数学(理)试题上海市复旦中学2023-2024学年高二上学期期末考试数学试卷(已下线)第六章 计数原理(压轴题专练)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第二册)
名校
2 . 设正项数列
满足
,
,且
,则数列
前10项的和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f8960f1d569fb733a902aadd5db79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/723ea7c5d9e3beae88a6058dc54c86f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f82183340058aad0d5592ab2a74a369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
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2020-09-01更新
|
493次组卷
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3卷引用:江苏省南通市如皋中学2020届高三创新班下学期高考冲刺模拟(三)数学试题
江苏省南通市如皋中学2020届高三创新班下学期高考冲刺模拟(三)数学试题(已下线)专题22 等差等比数列性质的巧用-学会解题之高三数学万能解题模板【2022版】沪教版(2020) 一轮复习 堂堂清 第四单元 4.5 数列的求和公式
名校
3 . 设正项数列
满足:
,且对于
,都有
,且
.
(1)求
,
;
(2)求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ee45219629dd30af171588e646f8b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8365233f341451598eb50525a1557a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2e39c2deef3fa9ef3d783bc0912ac3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a106d8500dc27cb020dc351c60083a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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2020-08-03更新
|
137次组卷
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2卷引用:江苏省南通市2020届高三下学期高考考前模拟卷(五)数学试题
4 . 在我国南宋数学家杨辉所著的《详解九章算法》一书中,用如图所示的三角形(杨辉三角)解释了二项和的乘方规律.右边的数字三角形可以看作当n依次取0,1,2,3,…时
展开式的二项式系数,相邻两斜线间各数的和组成数列
.例:
,
,
,….
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/959e3261-0d5e-4988-8a75-5a06e02faa95.png?resizew=383)
(1)写出数列
的通项公式(结果用组合数表示),无需证明;
(2)猜想
,与
的大小关系,并用数学归纳法证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5abcb3802cf02be93a8c89067bd49a.png)
![](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/2c2037221d1ac40cf28e2ef5d60e8edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0adbf307eef6f3610f342c57ddd275a6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/959e3261-0d5e-4988-8a75-5a06e02faa95.png?resizew=383)
(1)写出数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c587d225f909233b772abf6e6bed9a19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ebf2173007b30775097510495febcd.png)
您最近一年使用:0次
解题方法
5 . 已知数列
的首项
,且
,
.
(1)求
的最小值;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8141d87fb02b08c88b0c9f27f839a7d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8cc28189f7b3e4a258ecbf423d8322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a70b95c53fb6655721e2a8c61f5c2c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c21b25afd4a8a1e5fa351cf11545249.png)
您最近一年使用:0次
名校
6 . 已知数列
满足:
,
,
.
(1)化简:
(结果用
表示).
(2)求证:
,
.
![](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/b5bc50d3e9cacfaff721090ee725ce19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169f26144c7416f654dd1b6952b7573d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47c14f644b116359a48b09c0b053ed5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
您最近一年使用:0次
7 . 已知函数
,记
,当
时,
.
(1)求证:
在
上为增函数;
(2)对于任意
,判断
在
上的单调性,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bc4f7ba817dca32178b65d9aab5c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ab7bb40f58f28c9799b20f91d15d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57bdb7eaab39ffa580415a3f0a17ce26.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6ace630100e64ed290d82936ad249c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
(2)对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b4ceef651d43872a078d48092417d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
您最近一年使用:0次
2019-10-15更新
|
294次组卷
|
6卷引用:江苏省南通市2018年高考数学模拟试题
江苏省南通市2018年高考数学模拟试题【市级联考】江苏省苏北四市2019届高三第一学期期末考试考前模拟数学试题(已下线)专题6.6 数学归纳法 (练)-浙江版《2020年高考一轮复习讲练测》(已下线)2019年12月11日《每日一题》一轮复习理数-数学归纳法(已下线)专题7.6 数学归纳法(练)-2021年新高考数学一轮复习讲练测(已下线)专题12 导数法巧解单调性问题-备战2022年高考数学一轮复习一网打尽之重点难点突破
8 . 在教材中,我们已研究出如下结论:平面内
条直线最多可将平面分成
个部分.现探究:空间内
个平面最多可将空间分成多少个部分,
.设空间内
个平面最多可将空间分成
个部分.
(1)求
的值;
(2)用数学归纳法证明此结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d4f3be14a2996f9c07a79e09c4d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1933b7c3ace69622339353431c519b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1017ab58675c36b42c6e614c8417d891.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ace74bfb716753490ebe0e740ff5baa.png)
(2)用数学归纳法证明此结论.
您最近一年使用:0次
2019-04-23更新
|
452次组卷
|
2卷引用:【市级联考】江苏省南通市2019届高三下学期4月阶段测试数学试题
9 . 已知数列
满足
.
(1)证明:数列
是等比数列;
(2)令
,用数学归纳法证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72655c9b84ccd3055008da697d102fb7.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b2be223a9311e58198da7eedc940985.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5810e30dccba0334b420674489807aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd0c7aa848c4163ee5563838f4b231a.png)
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2020-02-25更新
|
669次组卷
|
6卷引用:2015届江苏高考南通密卷一数学试卷
2015届江苏高考南通密卷一数学试卷【全国百强校】安徽师范大学附属中学2018-2019学年高二下学期期中考试理科数学试题专题11.4 数学归纳法(练)-江苏版《2020年高考一轮复习讲练测》河南省郸城县第二高级中学2019-2020学年高二下学期网上学习第二次月考数学试题浙江省杭州市北斗联盟2019-2020学年高二下学期期中联考数学试题(已下线)2.3 数学归纳法-2020-2021学年高二数学(理)十分钟同步课堂专练(人教A版选修2-2)
10 . (1)用数学归纳法证明:当
时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0470a9c216ee0a58b729147d1e470ec5.png)
(
,且
,
);
(2)求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109156f6600c2ef5eecf30518d2f9acd.png)
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0470a9c216ee0a58b729147d1e470ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d52fd5a5f9b22c8be26dd9347fb6dd13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f17013324ac4a6862b422643b77fe6ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99074f989e74d5ff306b4b7b7a379c1f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109156f6600c2ef5eecf30518d2f9acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01e31d13fa73bcd510effee13d967da.png)
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2018-02-23更新
|
469次组卷
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2卷引用:江苏省南通市2018届高三上学期第一次调研测试数学试题