1 . 牛顿数列是牛顿利用曲线的切线和数列的极限探求函数
的零点时提出的,在航空航天领域中应用广泛.已知牛顿数列
的递推关系为:
是曲线
在点
处的切线在
轴上的截距,其中
.
(1)若
,并取
,则
的通项公式为__________ ;
(2)若取
,且
为单调递减的等比数列,则
可能为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3002f56900c2924bfd79fc3865b0a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/641fec779880f75fa8ee6782f3350402.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a582927de6e549053dfec41d5f9008a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a60302649eb940748da818199e55da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
(2)若取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6073fc52cd10164c1313dd96069b8d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0816dbd5a00f2a404b272c1521d3c2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
名校
解题方法
2 . 已知
都是各项不为零的数列,且满足
,
,其中
是数列
的前
项和,
是公差为
的等差数列.
(1)若数列
的通项公式分别为
,求数列
的通项公式;
(2)若
(
是不为零的常数),求证:数列
是等差数列;
(3)若
(
为常数,
),
(
,
),对任意
,
,求出数列
的最大项(用含
式子表达).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ae5eda314447b9d32aa65c4fef9d8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2090302ed425d7856dd01da759de66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85217cf0edbcc41703b3a44ff6e99d5d.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23041f38de082c9a8e86d932839d8f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e3459c5244b1ef1690181276ae553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1b790bf782345d2a5257a463a09baf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd98f0b01585d9c16c5a368dbeeecd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e36bff57bcfa86432b340e25e51d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b5aaee963c563972c8b64894032d01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a6c852d593cb9f6bdfd9eeddb50fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
名校
3 . 设正项数列
的前n项和为
,已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a0e3d8bc57aa79882ca671acf56e41b.png)
(1)求证:数列
是等差数列,并求其通项公式
(2)设数列
的前n项和为
,且
,若
对任意
都成立,求实数
的取值范围.
![](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/8a0e3d8bc57aa79882ca671acf56e41b.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03f9740fdb53458519740d698294fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ee490f0c45923503f996c5d2037c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2019-05-23更新
|
1339次组卷
|
6卷引用:【校级联考】四川省乐山十校2018-2019学年高一下学期半期联考数学试题
【校级联考】四川省乐山十校2018-2019学年高一下学期半期联考数学试题2020届山东实验中学高三第二次诊断性考试数学试题(已下线)考点20 数列的综合运用-2021年高考数学三年真题与两年模拟考点分类解读(新高考地区专用)(已下线)专题20 数列综合问题的探究-2021年高考数学二轮优化提升专题训练(新高考地区专用)【学科网名师堂】(已下线)专题4.1 等差数列与等比数列-备战2021年高考数学精选考点专项突破题集(新高考地区)江苏省吴县中学2020-2021学年高二上学期10月阶段性测试数学试题