1 . 已知数列
为等比数列,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259b2e755105c0ee479eabf7265a76a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2f236846ca02c90b7633fda2d1a9a82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
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2 . 在等比数列
中,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462b733b51c54407655bd9fe71e88938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f647cb23e634ce19636f2f39298c0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
A.![]() | B.4 | C.![]() | D.无法确定 |
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2023-12-28更新
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3 . 已知等比数列
的公比
且
,前
项积为
,若
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71acdb04454c77e1e25ad4f336cccfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45482d31d1d7448c9f3922b4d2a55331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed7787eb3d9d6c11f53c12e9ca07209.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 已知等比数列
的各项均为正数且公比大于1,前n项积为
,且
,则使得
的n的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb4ac310bbdba48db8381823653ba244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6ae93e401b499b0e39f251279b5663c.png)
A.5 | B.6 | C.7 | D.8 |
您最近一年使用:0次
名校
5 . 设
是等比数列,且
,
,则
的值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ab55b69404fdbda2a9e7591ac4f309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4dc281318f7d45c43f8fcd6544103f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd1f5a8f26fc6dad4e1f67467b16f97b.png)
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名校
6 . 若数列
是等比数列,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a160fe82dc536ee36b8757d9e3e48784.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39492b72974523916ac0efdc41dc022.png)
A.1 | B.![]() | C.![]() | D.![]() |
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7 . 已知等比数列
中,
,
,则公比![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465575a7557613a949b66408d079fd7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a27ee67f4016a48492a614ea2dc774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
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解题方法
8 . 记单调递增的等比数列
的前
项和为
,若
,
,则( )
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa3a7ce62e7bf557d9e1bf77c8dac0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85682b8829b13023e8f031174e492891.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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11卷引用:贵州省贵阳市普通高中2020届高三上学期期末监测考试数学(文)试题
贵州省贵阳市普通高中2020届高三上学期期末监测考试数学(文)试题黑龙江省齐齐哈尔市第八中学2019-2020学年高三10月月考数学(文)试题2020届河南省天一大联考“顶尖计划”高三第一联考理科数学试题2020届河南省天一大联考“顶尖计划”高三第一联考文科数学试题湖南省怀化市新博览2020-2021学年高三上学期期中联考数学试题陕西省2021届高三下学期教学质量检测(二)理科数学试题陕西省2021届高三下学期教学质量检测(二)文科数学试题(已下线)考向20等比数列及其前n项和(重点)-1四川省乐山市2022-2023学年高三上学期期末考试数学模拟试题宁夏回族自治区银川市宁夏育才中学2019-2020学年高二上学期期中数学(理)试题(已下线)第5课时 课后 等比数列的前n项和
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9 . 已知等比数列
的各项均为正数,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c59f25f5476a4c9345a15125be74941.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b27547497ef259e4fc462521faaa090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c59f25f5476a4c9345a15125be74941.png)
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10 . 在正项等比数列
中,若
,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/5871ce24144799b19fd6cdccfd0cc141.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
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