解题方法
1 . 如图的形状出现在南宋数学家杨辉所著的《算法九章·商功》中,后人称之为“三角垛”.已知某“三角垛”的最上层有1个球,第二层有3个球,第三层有6个球,
,设各层(从上往下)球数构成一个数列
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab342d472fe409e73bee1be8a61774d3.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee7bb49247387a9028602315729f8d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab342d472fe409e73bee1be8a61774d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/4/f980ea17-ad01-4507-9fef-58a8fff6158f.png?resizew=166)
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解题方法
2 . 数列
的前
项和为
,
,
,则(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
___________ ;(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2b169acc2a133bf5be9fed8328755e.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3965a3e8723c482d15d3d73b06ba8259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2b169acc2a133bf5be9fed8328755e.png)
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3 . 数列
满足
,其前
项和为
若
恒成立,则
的最小值为________________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1524175ae6b7c45b57dd46f338e88b61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fd239a1a2fe104df059d6df95757c3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ef124353a6e8f7a699086e5fd8e329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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2022-12-07更新
|
626次组卷
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7卷引用:山东省滨州市沾化区实验高级中学2022-2023学年高二上学期第二次月考数学试题
山东省滨州市沾化区实验高级中学2022-2023学年高二上学期第二次月考数学试题(已下线)期末押题预测卷02(范围:选择性必修第一册、选择性必修第二册)-【单元测试】2022-2023学年高二数学分层训练AB卷(人教A版2019)(已下线)江西省五市九校协作体2023届高三第一次联考文科数学试题变式题11-15内蒙古自治区通辽市开鲁县第一中学2022-2023学年高二上学期期末数学试题四川省内江市威远中学校2022-2023学年高三下学期第一次月考数学(理)试题四川省内江市威远中学校2022-2023学年高三下学期第一次月考数学(文)试题(已下线)拓展二:数列求和方法归纳(3)
4 . 已知函数
的图像过点
,令
,
.记数列
的前n项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4b5a382f920203b9ef307224ae641e.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f98703a94efdf092738b9b9cc431b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/081cd41dab0f2a8f84b0e9f1df4843fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02491b27e4e376251c4edcc820b814e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](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/4e4b5a382f920203b9ef307224ae641e.png)
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2022-10-29更新
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2卷引用:山东省泰安市新泰中学2022-2023学年高三上学期期中考试数学试题
5 . 若由函数
构造的数列
满足
,
,
,则称
为单位收敛函数.现有下列四个函数:①
;②
;③
;④
.其中所有单位收敛函数的编号是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d203f90f92ed9fd1b0f95a19c4e91839.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32414bf005401cf15cec135f57389757.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0bd44896a19f10e008d960df97786a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c486852b242f59f392fcde373541dcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82647fc552106005a4ce8262355f76ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f86957b1d88802b3c52060d7471613a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23a2ecf51fe0fbee6d2b80a0db4ce6d.png)
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6 . 已知数列
满足:
,
,且
,
,其中
.若
,则使得
成立的最小正整数m为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f8365233f341451598eb50525a1557a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0483a2816b0472a5b4a09f1a716ae01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd1c4630ae43edf9ee4dbbc300c7e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b01d7f7114b0e11e721da2aecb48ec3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c111ae39998037ad9c2eef5a892b3e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea8bac7b8aea5d87dba8c3a8b6cd7c16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def837d5429125f64fd4276d576f42a7.png)
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2022-04-30更新
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2卷引用:山东省济宁市2022届高三高考模拟考试(二模)数学试题
7 . 数列
中,
且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ff01f54e97b5d85b34907ea1da5754.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29518f13a1ebc3fff8181c2d7cfba22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bfa5345cee44e5daca28339714e881a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/573c9d792fab5605c9a5bff3dd84aaee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ff01f54e97b5d85b34907ea1da5754.png)
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山东省济南市历城第二中学2021-2022学年高三下学期3月模拟数学试题(已下线)专题6-1 数列递推求通项15类归纳-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)(已下线)2022年高考考前20天终极冲刺攻略(三)【数学】(新高考地区专用)(5月31日)【全国百强校】吉林省延边第二中学2018-2019学年高二上学期第二次阶段考试数学(理)试题(已下线)4.3 利用递推公式求通项(精讲)-【一隅三反】2023年高考数学一轮复习(基础版)(新高考地区专用)(已下线)专题05 数列的通项公式(1)(已下线)模块六 大招1 一阶线性递推辽宁省沈阳市第十一中学2023-2024学年高二下学期4月阶段测试数学试卷
名校
解题方法
8 . 已知向量
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403bcfe41532f9426e586c48552ae9bc.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e05ed44bfcf9bb9683c687e1f929675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8606e712e0c2c48006dcca161b953e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74d1eb70c695a49d5653db7717700772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403bcfe41532f9426e586c48552ae9bc.png)
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2022-03-08更新
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山东省日照市2022届高三模拟考试(一模)数学试题山东省潍坊市昌乐二中2022届高三4月高考模拟数学试题湖南省衡阳市第一中学2021-2022学年高二下学期第三次月考数学试题(已下线)4.4 数学归纳法(练习)-2022-2023学年高二数学同步精品课堂(人教A版2019选择性必修第二册)(已下线)4.4 数学归纳法(分层作业)-【上好课】2022-2023学年高二数学同步备课系列(人教A版2019选择性必修第二册)(已下线)4.4 数学归纳法(五大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
9 . 已知数列
满足
,
,则数列
的前n项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07404ab51f404f9411f79bd4f1fde654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1dd8ad24b8cd3e758750f053a3570f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f735b8651fcccaec058721aac3e5b4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.png)
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2022-01-26更新
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410次组卷
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2卷引用:山东省泰安市2021-2022学年高二上学期期末数学试题
解题方法
10 . 记函数
的图像在点
处的切线的斜率为
,则数列
的前n项和为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c084591e7faadd84559cf4b9d0244f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9ade1830062fe725e79bc8b0f3b57b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba57c83d526ac308d1461e80fcca9f36.png)
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