名校
1 . 已知等比数列
的前
项和
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1078cc3db9212c18f098170e8c9d4e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267b6e912c461dadc3d9588c814a3981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1078cc3db9212c18f098170e8c9d4e0.png)
A.![]() | B.3 | C.6 | D.9 |
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2019-03-12更新
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6卷引用:四川省雅安市雨城区雅安中学2020-2021学年高一下学期4月月考数学试题
名校
2 . 等比数列{an}的各项均为正数,且a4•a7=3,则log3a1+log3a2+…+log3a10=__ .
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2018-11-28更新
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3 . 正项等比数列
中,
,
,则
的值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d2348d5068480809ea002ebc2d3261b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d658c40795d223ad80d874d2b03fa4c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebbcbe7663a60af86c011fe4f39d28d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4942b27b50744639ac432a18d00ffa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.4 | B.8 | C.16 | D.64 |
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2018-07-19更新
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12卷引用:四川省雅安市雅安中学2020-2021学年高一下学期期中数学试题
四川省雅安市雅安中学2020-2021学年高一下学期期中数学试题【全国百强校】黑龙江省实验中学2017-2018学年高一下学期期末考试数学(文)试题【全国百强校】黑龙江省实验中学2017-2018学年高一下学期期末考试数学(理)试题内蒙古包头市稀土高新区二中2018-2019学年高一下学期第一次月考数学(文)试题宁夏石嘴山市第一高级中学2019-2020学年高二上学期期末数学试题宁夏银川市宁大附中2019-2020学年高二上学期期末数学试题重庆市第八中学2019-2020学年高一下学期第一次月考数学试题重庆市外国语学校2019-2020学年高一下学期期中数学试题广东省湛江市第二十一中学2019-2020学年高二上学期期中数学试题吉林省长春市农安县实验中学2019-2020学年高一下学期期末考试数学试题黑龙江省大庆实验中学2020-2021学年高三上学期第一次月考数学(文)试题广西南宁三十六中2020-2021学年高二9月份月考数学试题
4 . 已知等比数列
中,
,该数列的公比为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfdaea1fecbbb3b35f120f621a14e609.png)
A.2 | B.-2 | C.![]() | D.3 |
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2卷引用:【全国市级联考】四川省雅安市2017-2018学年高一下学期期末考试数学试题
5 . 已知数列
满足:
.
(1)求证:数列
是等比数列;
(2)求数列
的通项公式;
(3)设
,求数列
的前
项和
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925f52e9e8f9143a737f9d9edfc72325.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2de706dc5f0439b989273a5367f63a.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b2b95b8209c360aa7f0093f62f0a87f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d097c7f8a0e97adac6b29c3726ef3374.png)
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2018-05-19更新
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4卷引用:【全国百强校】四川省雅安中学2017-2018学年高一下学期期中考试数学(文)试题
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6 . 已知数列
是等差数列,数列
是等比数列,满足:
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95acbeffa8e2f426623802d16e8869e5.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc019481227f267d1b02a94d69021164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39310d284f2311fd7662100cc680b60f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95acbeffa8e2f426623802d16e8869e5.png)
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3卷引用:四川省雅安市2018届高三下学期三诊数学(理)试题
四川省雅安市2018届高三下学期三诊数学(理)试题【全国百强校】辽宁省鞍山市第一中学2019届高三第一次模拟考试数学(理)试题(已下线)理科数学-2021年高考考前20天终极冲刺攻略(二)(课标全国卷)
解题方法
7 . 已知公差不为零的等差数列
满足
,
,
成等比数列,
;数列
满足
,
.
(1)求数列
,
的通项公式;
(2)记
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d04a8b7a7595251251b8e0b7e665e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5453ec6a9e8b96357c888ea863ddcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34bc3df3bea2def2fd30b0f90d75ef32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/618594a3edd44a53b97dbf2cc58fbd81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195431ccf2756a0db26f14b7b91a32a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b07d9eea11327f9ae089a7d6a8b7095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eb268d73fafc7547182036d12625a24.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195431ccf2756a0db26f14b7b91a32a7.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdfd48ba243788fbdc34ec65712bb5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/733969643c55ec0ddfddd781a6545778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a425978da20cebf8c4c63953579e7b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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8 . 执行如图的程序框图,如果输入
,则输出的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447a9718a502491b47072ce013c26a2f.png)
![](https://img.xkw.com/dksih/QBM/2018/4/20/1928203064762368/1931752877514752/STEM/18ebd4b510874505bc4e18a88ab45767.png?resizew=130)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fb64d81d59bb16bb9af4088340490c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447a9718a502491b47072ce013c26a2f.png)
![](https://img.xkw.com/dksih/QBM/2018/4/20/1928203064762368/1931752877514752/STEM/18ebd4b510874505bc4e18a88ab45767.png?resizew=130)
A.![]() | B.![]() | C.![]() | D.![]() |
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2018-04-25更新
|
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2卷引用:四川省雅安市2018届高三下学期三诊数学(文)试题
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9 . 已知正项等比数列
(
)满足
,若存在两项
,
使得
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1933b7c3ace69622339353431c519b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fdcaf78e41a30864cfe42ebce79301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681ae1522a36768618f7ddaf74abbb7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa45f845bc583ac93363ae117d591fa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619d39e91f53ca96dada70742dc1ee38.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-12-13更新
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9卷引用:四川省雅安市2019-2020学年高一下学期期末考试数学试题
四川省雅安市2019-2020学年高一下学期期末考试数学试题2016届湖南省株洲市二中高三上学期期中理科数学试卷安徽省蒙城县第一中学、淮南第一中学等“五校”2018届高三上学期联考数学(理)试题安徽省蒙城县第一中学、淮南第一中学等2018届高三上学期“五校”联考数学(理)试题【市级联考】贵州省遵义市2018-2019学年高一下学期期中考试数学试题2016届上海市高考最后冲刺模拟(二)(文)数学试题北京外国语大学附属苏州湾外国语学校2020-2021学年第一学期高二期中模拟考试1数学试题江西省宜春市丰城中学2020-2021学年高二上学期理科期中考试试题四川省南充市南充市白塔中学2020-2021学年高三上学期期中数学试题
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10 . 设等比数列{an}的前n项和为Sn,若S10=40,S20=120,则S30=_____ .
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