9-10高二·江西九江·阶段练习
1 . 已知等差数列
的公差
,且
、
、
成等比数列,则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc858b7a95c5006a44067022da09f667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aeb46b0c02ecc62ad82f8695b3064cd.png)
您最近一年使用:0次
2020-03-21更新
|
602次组卷
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9卷引用:甘肃省武威第十八中学人教版高中数学必修五单元测试:第二章数列
甘肃省武威第十八中学人教版高中数学必修五单元测试:第二章数列宁夏银川市唐徕回民中学2017-2018学年高一下学期期中数学试题(已下线)2010年江西省九江市修水一中高二第一次阶段测试文科数学试卷(已下线)2011年广东省廉江中学高二上学期段考数学卷天津市耀华中学2018届高三12月月考数学(文)试题(已下线)活页作业5 等比数列-2018年数学同步优化指导(北师大版必修5)湖南省株洲市茶陵二中2019-2020学年高二上学期第二次月考数学试题沪教版(上海) 高二第一学期 新高考辅导与训练 第7章 数列与数学归纳法 7.3(1)等比数列的定义与通项公式的应用1992年普通高等学校招生考试 数学(理)试题(全国卷)
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2 . 等差数列
中,
,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb4322516aa4b45c3d5d256a2aab12ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8fbc2d021c78b4a216b9f91ba8bc15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31003abb9dc62e66475541cf4f2e7cc4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-03-09更新
|
412次组卷
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4卷引用:河北省唐山市滦南县2018-2019学年高一下学期期中数学试题
解题方法
3 . 已知等差数列
的前n项和为
,关于x的不等式
的解集为
.
(1)求数列
的通项公式;
(2)若数列
满足
,求数列
的前n项和
.
![](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/522bb59f912138a931673ab2813cc77b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c6d785c3c09b9df343499dc11cadaa.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff47ceb7948100fee79c24b0abae11e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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4 . 设
为等差数列
的前
项和,若
,公差
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c1344592c925b273f2cb9b9e47ebbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7082c0751845f99cb8d819ede220aaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
A.5 | B.6 | C.7 | D.8 |
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2020-02-27更新
|
347次组卷
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2卷引用:福建省三明市尤溪五中2019-2020学年高一4月份线上数学试题
5 . 已知
是等差数列,
,
,则
的前n项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac41b750e9b4309195976c7e5151da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
您最近一年使用:0次
6 . 已知等差数列
的首项
,公差
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.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/c5c1344592c925b273f2cb9b9e47ebbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.5 | B.7 | C.9 | D.11 |
您最近一年使用:0次
名校
7 . 已知正项数列
的奇数项依次成等差数列,偶数项依次成等比数列,且
,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f966272f7781790ff27e40db6b525253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c0df1b47f475ab13008fbadcbeef6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e44b0b9aaf194c5f5037063413a630cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c947dc30f6ebc564c71a6b2da14481ea.png)
A.33 | B.34 | C.38 | D.35 |
您最近一年使用:0次
2020-02-19更新
|
584次组卷
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2卷引用:四川省眉山市仁寿第一中学校南校区2018-2019学年高一下学期第三次质量检测数学试题
名校
解题方法
8 . 设数列
是公差不为零的等差数列,它的前
项和为
,且
、
、
成等比数列,则
等于( )
![](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/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f30f56664446f32dbbc2c5f12a99374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afff825824f046bac361bd82802b4c4f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-17更新
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363次组卷
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2卷引用:黑龙江省哈尔滨市第三中学2018-2019学年高一下学期期末数学试题
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解题方法
9 . 我国明代珠算家程大位的名著《直指算法统宗》中有如下问题:“今有白米一百八十石,令三人从上及和减率分之,只云甲多丙米三十六石,问:各该若干?”其意思为:“今有白米
石,甲、乙、丙三人来分,他们分得的白米数构成等差数列,只知道甲比丙多分
石,那么三人各分得多少白米?”.请问:丙应该分得( )白米
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f7530034abc91d11bc847602eaf5bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/492b6d3883713fcaa8a4fdd87b87b480.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 等差数列
前
项和为
,已知
,
,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/b3859890e300f470dcf4a215249da07e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36183db0759eec0e108274d229fcd00b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-02-15更新
|
618次组卷
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3卷引用:河北省元氏县第一中学2019-2020学年高一下学期第一次月考数学试题