1 . 在数列
中,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd61e3c00636ed6c10478108d6ac34c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f11075f2c574b6c59b97fb3038000e38.png)
A.5 | B.![]() | C.4 | D.![]() |
您最近一年使用:0次
2 . 已知两个等差数列
与
的前
项和分别为
和
,则使得
的值为( )
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e78ba17e7628baa1c5d8fd8faf5f0864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265397c51288caa8df9b42f1f698b5a5.png)
A.7 | B.8 | C.9 | D.10 |
您最近一年使用:0次
名校
3 . 已知在数列
中,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/841ad86320eb2f858e8846cae377fc9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd21f4cb498101d26b4aaa2e1a6addc.png)
A.![]() | B.![]() | C.1 | D.2 |
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解题方法
4 . 已知等差数列
的前
项和为
,则使得不等式
成立的最大的
的值为( )
![](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/72faa6336fd75c1eb4f456c5b0772cf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/937228faf3b035ce9fb607ec96f707f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.8 | B.9 | C.10 | D.11 |
您最近一年使用:0次
2024-04-07更新
|
233次组卷
|
2卷引用: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
名校
解题方法
5 . 已知数列
满足
,且
总等于
的个位数字,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f2bee5c248cf87d219a507455e1083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff169acac7eb0346fa6baffa4f1b173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39222f0687c9124bddb35544bcc7798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62bae11b31f657478e97646895a289e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2129aeec53af798f48c5e4abe16a6b4c.png)
A.7 | B.21 | C.49 | D.63 |
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名校
6 . 《周髀算经》中有这样一个问题:从冬至开始的十二个节气依次为冬至、小寒、大寒、立春、雨水、惊蛰、春分、清明、谷雨、立夏、小满、芒种,其日影长依次成等差数列,其中雨水、惊蛰两个节气的日影长之和为16尺,且最前面的三个节气日影长之和比最后面的三个节气日影长之和大18尺,则立夏的日影长为( )
A.4尺 | B.4.5尺 | C.5尺 | D.5.5尺 |
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7 . 数列
满足:对于
,已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb395b96aa491971b75676573ba8920.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3859890e300f470dcf4a215249da07e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7999465d0e871febde66296a0cbf058c.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2024-04-03更新
|
226次组卷
|
3卷引用:河南省青桐鸣联考2023-2024学年高二下学期3月月考数学试题
名校
8 . 已知数列
满足
,且
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3172a2dfbce3ce32fd909ff548e75b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd21f4cb498101d26b4aaa2e1a6addc.png)
A.4 | B.1 | C.3 | D.![]() |
您最近一年使用:0次
2024-04-03更新
|
165次组卷
|
2卷引用:河南省创新发展联盟2023-2024学年高二下学期第一次月考数学试题
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9 . 已知数列
为递减的等比数列,且
,
,则
的公比为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74be5c7ca19098570a0c87240e59d4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f46d7d91e1a6c2b965923998a30fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10 . 已知等比数列
的各项均为正数,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a579adf918d8189de52062377d7115e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4be177c9933abca3be25de5f61698800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ea9e6672f9e8ba0383e2463239a472.png)
A.729 | B.![]() | C.![]() | D.2187 |
您最近一年使用:0次