1 . 已知数列
的前
项和为
,
.
(1)证明数列
是等比数列,并求数列
的通项公式;
(2)
,求证:
.
![](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/699b3a920d4eff8610efc8a448976695.png)
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2de706dc5f0439b989273a5367f63a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c139cd8b5c5b9b4e959ee1341270a40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722a8ffc69ecd6e10f26fffc938d7dc6.png)
您最近一年使用:0次
2 . 在数列
中,已知
.
(1)证明数列
是等比数列,并求数列
的通项公式;
(2)设
的前
项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844118c540081942e296baaf4d401363.png)
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/648f18c8c48f24ffc7107a08a7c39a2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d657a63b3b834ee4472dea90b96cc963.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/3bbdef3ea961cf33cc9a8ec9f4e72d76.png)
您最近一年使用:0次
解题方法
3 . 设数列
为等差数列,
, 公差为
.
(1)若
成等比数列,求
的值;
(2)设
均为正整数, 若
是正整数, 求证:对于任意正整数
都是数列
中的项;
(3)若
均是数列
中的项, 问数列
中的各项是否均为整数?若是,证明你的结论;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a694aedf4c34c4fffbb7678e9aa3eade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9efeb4455e30293d412938eeea85d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c936861702fb85ec54ced5fc4079daff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957ca13cff1f3eefe7a92dc4d1f2f84d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da2dd8d2a73a50b19abd87bb39f48f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7232af3b713c69d50b9422159e9c0e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/125d2871bb20d05c5b5d3d1623ba10ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a694aedf4c34c4fffbb7678e9aa3eade.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c936861702fb85ec54ced5fc4079daff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a694aedf4c34c4fffbb7678e9aa3eade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
4 . 如图,已知曲线
:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497aceb0440d794dfedf2cdd42e131ce.png)
及曲线
:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc9e65f2fa9af923d5db7cff37782d7.png)
,
上的点
的横坐标为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
.从
上的点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
作直线平行于
轴,交曲线
于点
,再从点
作直线平行于
轴,交曲线
于点
,点
(
,2,3……)的横坐标构成数列
.
![](https://img.xkw.com/dksih/QBM/2016/3/8/1572525822836736/1572525829177344/STEM/b12a6ba397f64d30b29f8afd385551f4.png?resizew=246)
(1)试求
与
之间的关系,并证明:
;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497aceb0440d794dfedf2cdd42e131ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab03556c333ab0b55fe86c937b2a5763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc9e65f2fa9af923d5db7cff37782d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab03556c333ab0b55fe86c937b2a5763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9993f6dc979bfbe11ca160daf225d6a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f79dc80683f49c71b505e4bb711dbbb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15520cf5be7c2685975aac51bc99ac4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15520cf5be7c2685975aac51bc99ac4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c15016fc7de1cd5971b7d38c70071e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://img.xkw.com/dksih/QBM/2016/3/8/1572525822836736/1572525829177344/STEM/b12a6ba397f64d30b29f8afd385551f4.png?resizew=246)
(1)试求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e22720a7250e79903635cb6eb368b6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14835bf3f00139ccec0694d0924db795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265ec3d91f1abd3cb756888d21ee7ae3.png)
您最近一年使用:0次
5 . 已知数列
的首项![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e66d7c5dae4d357a278bfd224144ee1f.png)
的前
项和为
.
(1)求证:数列
是等比数列,并求数列
的通项公式;
(2)证明:对任意的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23aacab3c20b215a9616bc3434cc4e28.png)
(3)证明:
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572207888957440/1572207895076864/STEM/d0da94816c534be4a101db4c0e7e0bc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e66d7c5dae4d357a278bfd224144ee1f.png)
![](https://img.xkw.com/dksih/QBM/2015/8/7/1572207888957440/1572207895076864/STEM/d0da94816c534be4a101db4c0e7e0bc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e06816992e1b854b5d4dae9a957b5e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)证明:对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23aacab3c20b215a9616bc3434cc4e28.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e37c8ff63c08973e2a5bb9fdc2a1cd7.png)
您最近一年使用:0次
名校
6 . 已知数列
前
项和为
,满足
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e375b8b3791ee98dab11cd97b6379f.png)
(1)证明:数列
是等差数列,并求
;
(2)设
,求证:
.
![](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/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e375b8b3791ee98dab11cd97b6379f.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f543f3aafa4740bd65aefc8d8de4b6f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ac75838b14085b34c59a0eb385ac4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b340e6cfa6ab9b97da7409f2db62c00.png)
您最近一年使用:0次
2016-12-03更新
|
865次组卷
|
5卷引用:2015届江西省高安中学高三命题中心模拟押题一文科数学试卷
7 . 设
.
(1)若数列
的各项均为1,求证:
;
(2)若对任意大于等于2的正整数
,都有
恒成立,试证明数列
是等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/399a6e81ac628fe828a71c362fcc7cae.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8fcccbb1234ad67314c96f9856e240.png)
(2)若对任意大于等于2的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8fcccbb1234ad67314c96f9856e240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
您最近一年使用:0次
解题方法
8 . 已知数列
满足:
.
(1)证明:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb11f8d571702101e97df5dfa8040249.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ef5fc9014e6fae3aae9da1b32db744.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba90fa7ea3d33afe86227e3cbcabe119.png)
您最近一年使用:0次
9 . 数列
.
(1)求证:
是等比数列,并求数列
的通项公式;
(2)设
,求和
,并证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4d0dcca61d261df330d87e26600353.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a080c94bf1ffea8d5af10f9688978fb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c40fe25c4e3fbeadf90539072513b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac96b09d3eccdb9a4c17ecbdec9ecebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83fff70ec803e87beff4fae74df040c8.png)
您最近一年使用:0次
2016-12-04更新
|
1032次组卷
|
3卷引用:2016届山东师大附中高三上学期第三次模拟理科数学试卷
2014·陕西·模拟预测
10 . 已知数列
的前n项和为
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e7075462365271b0e865509de43363.png)
(1)证明:数列
是等差数列,并求
;
(2)设
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a2eafb3dd274dd9b98d83c38e87802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e7075462365271b0e865509de43363.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a2eafb3dd274dd9b98d83c38e87802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd04c9e114f9b99a8ffbac981a88937.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a8d04059bfffc50f39e67adc9a11470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/718f9b9e4032e388f4ad5989962b857e.png)
您最近一年使用:0次