解题方法
1 . 已知p:如果数列
是等比数列,那么数列
也是等比数列;q:如果数列
是等差数列,那么数列
也是等差数列.以下哪些为真命题___________ .
①p∧q
②p∨q
③
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3523ba3e007b23175ebc813bc9843510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3523ba3e007b23175ebc813bc9843510.png)
①p∧q
②p∨q
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abb9d57cbe246df4aa7b2e12e4aed9ed.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a464aa880b9557686ddf53396129166.png)
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解题方法
2 . 等比数列
的前n项和为
,且
成等差数列.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.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/85f31d1e7f60be872ec494af07d6b574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.png)
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3 . 写出同时满足下列条件的数列
的一个通项公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
________ ;
①数列
是递减数列,②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
①数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0515775e751e33b3df49f5ee93c6792.png)
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2023-05-03更新
|
179次组卷
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4卷引用:新疆石河子第一中学2022-2023学年高二下学期5月月考数学试题
新疆石河子第一中学2022-2023学年高二下学期5月月考数学试题云南省昆明市西山区2022-2023学年高二上学期2月期末考试数学试题(已下线)模块二 专题4 《数列》单元检测篇 A基础卷(北师大2019版)(已下线)模块五 专题2 全真能力模拟(高二人教B)
4 . 已知各项均不为零的数列
的前
项和为
,
,
,
,且
,则
的最大值等于______ .
![](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/bbe7bdaaf8b0adf10bf2ef6c1255b1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7fdd606e80f1f7c0a559d259d381c6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd5709eb825305a9809e740ba2bb317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5b083c3cf55f65f882796e960f4c3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08c9965a04c2a6de04e949a15762f372.png)
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名校
解题方法
5 . 杜牧《羊栏浦夜陪安会》的诗句中“球来香袖依稀暖,酒凸觥心泛艳光”描述的是唐代酒宴上的助兴游戏“击鼓传花”,也称传彩球.游戏规则为:鼓响时,众人开始依次传花,至鼓停为止,此时花在谁手中,谁就上台表演节目.甲、乙、丙三人玩击鼓传花,鼓响时,第1次由甲将花传出,每次传花时,传花者都等可能地将花传给另外两人中的任何一人,经过8次传递后,花又在甲手中的概率为________ .
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2023-04-18更新
|
748次组卷
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2卷引用:新疆石河子第一中学2022-2023学年高二下学期5月月考数学试题
名校
6 . 在等比数列
中,
,
是方程
的两根,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e7b23fd74e3cf89ac541cb7a5d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1475173175d729d17d1674458a4bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/809b5ca4a1afb5387f11bc2c2ead9a6c.png)
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7 . 若数列
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f092294f4d1d42dd89941a6b2e3d5a0a.png)
___________ .(用具体数值作答)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1564e1fc71a17cfda0f7aa4a5285062d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f092294f4d1d42dd89941a6b2e3d5a0a.png)
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2023-04-13更新
|
674次组卷
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2卷引用:新疆维吾尔自治区乌鲁木齐市新疆生产建设兵团第二中学2022-2023学年高二下学期第二次月考数学试题
8 . 在等比数列
中,
,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/2d4bba67f9bebc2eeae8d4580bab161e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
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名校
9 . 若
,b,c为实数,数列
是等比数列,则b的值为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e08d9b00f1b9368c88684a5dd79db13.png)
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2023-04-04更新
|
686次组卷
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2卷引用:新疆巴音郭楞蒙古自治州若羌县中学2024届高三上学期6月摸底考后强化数学试题
10 . 正项等比数列
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7872011f6c34b3ac669c10815b99f514.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aed7f72b1b80cafb600c8c6b0084b313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7872011f6c34b3ac669c10815b99f514.png)
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