1 . 等差数列
的前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.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/2b27c593f8faa6f088046735206e5502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.png)
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2 . 设等差数列
的前n项和为
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36243198e5e20c56399e4ad5ac3c519.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/2c32a54d94ca7db5bebdabfaa1a5f69b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a40e001a815b0f2edc08127d9bd498e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36243198e5e20c56399e4ad5ac3c519.png)
您最近一年使用:0次
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3 . 在中国文化中,竹子被用来象征高洁、坚韧、不屈的品质.竹子在中国的历史可以追溯到远古时代,早在新石器时代晚期,人类就已经开始使用竹子了.竹子可以用来加工成日用品,比如竹简、竹签、竹扇、竹筐、竹筒等.现有某饮料厂共研发了九种容积不同的竹筒用来罐装饮料,这九种竹筒的容积
(单位:L)依次成等差数列,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09d8084c6590784775495f12d5e8e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6de5cac03fcfd7cf74db7b7bc6ab893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92d4dc8726d391817119ac4370899d13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a004bc7c90ab090e76a37d3a4c58fb3.png)
A.5.4 | B.6.3 | C.7.2 | D.13.5 |
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2024-03-14更新
|
816次组卷
|
2卷引用:四川省南充高级中学2024届高三第二次模拟(理)试卷试题
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4 . 已知数列
为等差数列,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/395001443a4bb5354df210b3ee289ebc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824f3b33e55da8bbd42613438bfb7905.png)
A.2 | B.4 | C.6 | D.8 |
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2024-03-07更新
|
1739次组卷
|
8卷引用:四川省成都市石室中学2023-2024学年高三下学期二诊模拟考试文科数学试题(A)
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5 . 已知数列
为等比数列且
,设等差数列
的前
项和为
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94eb7db5378bbaea656a013e2105dfb.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ded779955460cd2e08a4574bd5646dd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
A.![]() | B.![]() | C.18 | D.2 |
您最近一年使用:0次
6 . 已知等差数列
的前n项和为
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554e6c461ccc5aa3093c524aa528a4e2.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/305e79ef7f61a695aa7fb742129cbfa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554e6c461ccc5aa3093c524aa528a4e2.png)
您最近一年使用:0次
2024-03-02更新
|
560次组卷
|
2卷引用:四川省大数据精准教学联盟2024届高三第一次统一监测文科数学试题
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7 . 设等差数列
的前
项和为
,若
,则
( )
![](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/3f86a8746a583f411fb73c6334eb27b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
A.![]() | B.![]() | C.18 | D.2 |
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8 . 设等差数列
的前
项和为
,且
,则
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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a59b6d44509728b04821c38e4f0771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82aebc6940e2fa438a3a14cb3aae8b7e.png)
A.6 | B.7 | C.8 | D.9 |
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2024-01-25更新
|
961次组卷
|
4卷引用:四川省成都市石室中学2024届高三上学期期末数学(理)试题
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9 . 已知等差数列
的前
项和为
,若
,则
( )
![](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/8e9ed22f06dd1db2231a783737de75da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a410d0da97c22870f1b77fce62d44075.png)
A.2 | B.![]() | C.![]() | D.![]() |
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2024-01-18更新
|
556次组卷
|
2卷引用:四川省绵阳市三台中学校2024届高三下学期第二学月测试文科数学试题
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10 . 等差数列
满足
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6c796eab9fd795a4d8f7ee655cc00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9caf0d6f1613d936f9b0482f2206802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa37e5661af68b263a3ed9030d4e9003.png)
A.35 | B.37 | C.41 | D.43 |
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