名校
1 . 在正项等比数列
中,
,则
的最大值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0fdd6661bb04cc216641de7e89d7c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefc81004f635ff8ec14b3008154724d.png)
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解题方法
2 . 在等差数列
中,
,
,
为数列
的前
项和,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc625e19e7ca2b9d097f67a3d472e47.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3a98359ffae37dc6b8fe45fdcc5ae5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5268e7897efdd5bda34a963098349c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91adba8efbf964e9e35547b0fd0ea36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc625e19e7ca2b9d097f67a3d472e47.png)
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3 . 已知数列
的通项公式为
,记
,若
,则正整数
的值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb7a970a0b96e1c945b3e1189a87c714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9c167dc2de7663c031fec059996f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae6cfae0a5bdbe767111168e055280af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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解题方法
4 . 若等差数列
的首项
,
,记
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a1404c7e8a894900a5265a502adf478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d774634e468a66a09297481b477cf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479ca2b29acd24bc273a1d6859339f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.png)
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2023-10-16更新
|
856次组卷
|
4卷引用:江苏省苏州市吴江中学2023-2024学年高二上学期10月月考数学试题
江苏省苏州市吴江中学2023-2024学年高二上学期10月月考数学试题(已下线)4.2 等差数列(5)(已下线)第03讲 4.2.2等差数列的前 项和公式(2)河南省焦作市第十二中学2023-2024学年高二上学期12月月考数学试题
2023高三·全国·专题练习
解题方法
5 . 已知数列
的通项公式为
,那么满足
的正整数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e99bc30c7df18ec527142905327cb9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9534ed1c74894c735ffa3c71df721343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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解题方法
6 . 等差数列
前
项的绝对值之和为50,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33898da0f909194fa4089f8350db2f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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解题方法
7 . 等差数列
中,
是它的前n项的和,且满足
.则
的最大值为__________ ;数列
的前n项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.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/5bfbd4d39063d5f444eb93c7cbbc4b64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91adba8efbf964e9e35547b0fd0ea36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.png)
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名校
解题方法
8 . 已知数列
的通项公式为
, 则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320bdb67ff9f31b1235177efc7ad3aa3.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eabe1dd43a59893aeeaceb9ab1a96222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320bdb67ff9f31b1235177efc7ad3aa3.png)
您最近一年使用:0次
2023高三·全国·专题练习
解题方法
9 . 在等差数列
中,
,
,求数列
的前n项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181967fe81f94621cb446130c99c3121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c98aaba1203b133a3b019d6102e367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91adba8efbf964e9e35547b0fd0ea36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.png)
您最近一年使用:0次
名校
解题方法
10 . 数列
的前
项和为
,则数列
的前
项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644910a88bb44405925eff485c9ca312.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/30986f5ab4d03557c736fb70d1b4bf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91adba8efbf964e9e35547b0fd0ea36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644910a88bb44405925eff485c9ca312.png)
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