名校
解题方法
1 . 已知函数
的图象上有一点列
,点
在
轴上的射影是
,且
(
且
),
.
(1)求证:
是等比数列,并求出数列
的通项公式;
(2)对任意的正整数
,当
]时,不等式
恒成立,求实数
的取值范围;
(3)设四边形
的面积是
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02a8c6e6c64820ad118f868089cbd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09b7981426207af195da5b05ee4f197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a2c27c29d41effabc45ce431e6f2d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7100f6a7df7e05c0107585cb068060fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0736457346c11dd6f458418a4f747ff.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fa575eec471d20667624bd4e9f7924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
(2)对任意的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c395021157c73ac8dcde32864f7e121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b2c4141266b7e72446f0f51d3656baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)设四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1115b0ed47290e1a72adf1754eb8cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef70cd39654b5f000e4b617a270c570.png)
您最近一年使用:0次
2020-07-25更新
|
537次组卷
|
5卷引用:黑龙江省佳木斯市第一中学2016-2017学年高一下学期期末考试数学试题
2 . 已知点
关于直线
的对称点为
,且对
直线
恒过定点
,设数列
的前
项和
,且
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edea8abb22d14062e444117d397832c6.png)
(1) 求数列
的通项公式;
(2) 设
为数列
的前
项和,证明:对一切正整数
,有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/198c7dbfeda718a3bb66ec3507e178bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d6e08526a91f8dfd160e7da2f92a3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f58b4ad4f1d0dd86721d6be61cce4833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995ec593baa4ef50b6d87c78380953d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32126ee058e0a5c2095ac0f86af2e7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf9304d22a3491440034660f115492a.png)
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edea8abb22d14062e444117d397832c6.png)
(1) 求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2) 设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.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/60f64ba0d54562f1116d869910490ccb.png)
您最近一年使用:0次
3 . 已知数列
满足
,
,
.
(1)求证:数列
是等差数列;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d971b3e74014e2a8eb7e90f4529b42f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/452441c97433c6dee7d6a8dd4aaa7133.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18fada8fb229e188018a3fa2f28d2e96.png)
您最近一年使用:0次