1 . 已知数列
为等差数列,且
.
(1)求
;
(2)若
,数列
的前
项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c133f850a40f4d23c30fa91a1e7d74a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bbcb26addf21a599766e97121544f1d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64cebdb4c3e6d38246b303b09ffe2bfd.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/94351ce858fa3f3a09cfadc2d23d7253.png)
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2卷引用:山东省大联考2023-2024学年高二下学期3月质量检测联合调考数学试题
名校
解题方法
2 . 已知
为数列
的前n项和,满足
,且
成等比数列,当
时,
.
(1)求证:当
时,
成等差数列;
(2)求
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1afae439f6cda00e6b1fcc2bf5363ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/874781ab5711bff6ee8c9cbad5b3b3dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5d0a73f50b3e4583f1c1b6d6bf0d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
(1)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5d0a73f50b3e4583f1c1b6d6bf0d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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2卷引用:内蒙古赤峰市赤峰二中2023-2024学年高二下学期第一次月考数学试题
3 . 已知数列
满足:
.
(1)设
,求证数列
是等比数列,并求其通项公式;
(2)求数列
前20项中所有奇数项的和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8552d7e1f3e1eb05192198ce1fa812de.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0599119521555db36c4fcbb877d3bdc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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2023-12-20更新
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3卷引用:福建省莆田市第四中学2024届高三上学期第三次月考数学试题
福建省莆田市第四中学2024届高三上学期第三次月考数学试题(已下线)考点6 等比数列的前n项和的性质 2024届高考数学考点总动员山东省青岛第五十八中学2023-2024学年高二上学期期末模块考试数学试卷
名校
解题方法
4 . 已知数列
,
满足
,
,
,
.
(1)求证:数列
为常数列;
(2)求证:
;
(3)设数列
的前
项和为
,求证:当
时,
.
![](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/86fc336b4a83bf6d66c4afcc431597f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6d8a8a57db1c2fc7f465d2cfd2aa78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71406c902e2bfb15f5b84ea419611e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11dfa40ef6f9010cfddb149a8885b528.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52c9237cb0b4acc568d4afb12997186.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e970038ed20d95a45c228ee5572861.png)
(3)设数列
![](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/10e468312d09c6563c9094b710a35a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e814df6580f2d9989ae05d2fce5474df.png)
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名校
解题方法
5 . 在数列{an}中,
.
(1)求出
,猜想
的通项公式;并用数学归纳法证明你的猜想.
(2)令
,
为数列
的前n项和,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15e779d7f20c595a2f7a67b98a68eff4.png)
(1)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe61d313eeca8ba47478a9de40540db8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/022e55604bc18f62502221660211433e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
6 . 已知数列
的前
项和为
,前
项积为
,满足
.
(1)求
,
和
;
(2)证明:
.
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3d463d63d86152798519b67e9e20114.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9a724b59c890095baa5cb73e267c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9275bd8ce17fcc4a786510b008414ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2d87f905b3669b5c7b6fd076896a24.png)
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2卷引用:重庆市南开中学校2023-2024学年高二下学期阶段测试数学试题
名校
解题方法
7 . 2023年10月11日,中国科学技术大学潘建伟团队成功构建255个光子的量子计算机原型机“九章三号”,求解高斯玻色取样数学问题比目前全球是快的超级计算机快一亿亿倍.相较传统计算机的经典比特只能处于0态或1态,量子计算机的量子比特(qubit)可同时处于0与1的叠加态,故每个量子比特处于0态或1态是基于概率进行计算的.现假设某台量子计算机以每个粒子的自旋状态作为是子比特,且自旋状态只有上旋与下旋两种状态,其中下旋表示“0”,上旋表示“1”,粒子间的自旋状态相互独立.现将两个初始状态均为叠加态的粒子输入第一道逻辑门后,粒子自旋状态等可能的变为上旋或下旋,再输入第二道逻辑门后,粒子的自旋状态有
的概率发生改变,记通过第二道逻辑门后的两个粒子中上旋粒子的个数为
.
(1)若通过第二道逻辑门后的两个粒子中上旋粒子的个数为2,且
,求两个粒子通过第一道逻辑门后上旋粒子个数为2的概率;
(2)若一条信息有
种可能的情况且各种情况互斥,记这些情况发生的概率分别为
,
,…,
,则称
(其中
)为这条信息的信息熵.试求两个粒子通过第二道逻辑门后上旋粒子个数为
的信息熵
;
(3)将一个下旋粒子输入第二道逻辑门,当粒子输出后变为上旋粒子时则停止输入,否则重复输入第二道逻辑门直至其变为上旋粒子,设停止输入时该粒子通过第二道逻辑门的次数为
(
,2,3,⋯,
,⋯).证明:当
无限增大时,
的数学期望趋近于一个常数.
参考公式:
时,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(1)若通过第二道逻辑门后的两个粒子中上旋粒子的个数为2,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a18d2bd429301b5478dcd26c572266.png)
(2)若一条信息有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef66ba6d5421383f47b4783db53bf7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffb021aa7d5a5c2f0691e337caad624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b930a98ed7eb5ae313050f7c97d2a16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c5a2ba6cfa94756ac1a0f74ac9e4f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
(3)将一个下旋粒子输入第二道逻辑门,当粒子输出后变为上旋粒子时则停止输入,否则重复输入第二道逻辑门直至其变为上旋粒子,设停止输入时该粒子通过第二道逻辑门的次数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f157de581046dc6a6002f771b60ad61c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca664b1e82da6f50064a76fe118aa80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71b352414c4a600fc4ea827a0c64f22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0aceee7cba466e6bf17f43d15bf25f.png)
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2024-03-04更新
|
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4卷引用:湖南省新高考十八校联盟2024届高三下学期3月月考数学试题
湖南省新高考十八校联盟2024届高三下学期3月月考数学试题(已下线)第2套 重组模拟卷(模块二 2月开学)(已下线)专题09 计数原理与随机变量及分布列(讲义)湖北省襄阳市第五中学2024届高三第二次适应性测试数学试题
名校
解题方法
8 . 已知数列
的前
项和为
,且
,
.
(1)求
,
,并证明:数列
为等比数列;
(2)求
的值.
![](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/caac5bbd7b5eef4303a99e16f1701806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ced72f99d3e93cec09c40f24089b86.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2de706dc5f0439b989273a5367f63a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85fb87907fa5a97b3ad0261b0c0addf.png)
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5卷引用:重庆市缙云教育联盟2024届高三下学期3月月度质量检测数学试题
9 . 已知首项为4的数列
的前n项和为
,且
.
(1)求证:数列
为等比数列;
(2)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/525b2e213d0dea50cd658e7ae366f076.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3aa58f647f4af83647f140cfb8dc7f.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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5卷引用:河南省郑州市宇华实验学校2024届高三上学期12月月考数学试题
河南省郑州市宇华实验学校2024届高三上学期12月月考数学试题四川省成都市石室中学2023-2024学年高三上学期期中考试理科数学试卷四川省成都市石室中学2023-2024学年高三上学期期中考试文科数学试卷四川省成都市第七中学2024届高三上学期理科数学综合测试题(已下线)专题08 数列(5大易错点分析+解题模板+举一反三+易错题通关)
10 . 若数列
的前
项和
满足
.
(1)证明:数列
是等比数列;
(2)设
,求数列
的前
项和
.
![](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/312fddeb97c72b0aa3a0408dfdc2f067.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c895d4ce5ce82ef9b311b9369b4de11.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60ee7a54a255800d1a6156b4fa0f20e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ae722578522dc4e2bae41f93db8e38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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4卷引用:福建省名校联盟全国优质校2024届高三大联考数学试卷