1 . 已知
,
,
既成等差数列又成等比数列,二次函数
的图像与直线
交于不同两点
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4d12362d4b8dd25813953e1c5a94b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97dad16e4910ec15add074c4077b0e86.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-08-06更新
|
229次组卷
|
3卷引用:四川省达州市2020-2021学年高一下学期期末数学(文)试题
2 . 已知正项等比数列
的公比为
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d4a1a8c9ea659dadf0ba9585cdfce83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41c3a5b3e16e86b52e7cca830ca7f82.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知等差数列
满足
,且
,
,
成等比数列.
(1)求
的通项公式;
(2)设
的前
项和为
,若
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac6d608ced0f21a637a30ec2a7870807.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e7b23fd74e3cf89ac541cb7a5d88.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](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/a541d434dc9b1bea9c289581b17d3035.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2021-08-06更新
|
696次组卷
|
3卷引用:江西省抚州市2020-2021学年高一下学期期末数学(文)试题(B卷)
江西省抚州市2020-2021学年高一下学期期末数学(文)试题(B卷)江西省抚州市2020-2021学年高一下学期期末数学(理)试题(B卷)(已下线)专题7.20 数列大题(裂项相消求和2)-2022届高三数学一轮复习精讲精练
名校
4 . 已知数列
是等比数列,且
那么
的值等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd474e7adc59880f6844181f8670af0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91bd229432c1831316bd6ee8f2691a79.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
5 . 数列
是首项为1,公差不为0的等差数列,且
成等比数列,数列
满足:
,
.
(1)求数列
的通项公式;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcd9a1492c60152f2e32604cd519e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a7da5d487e18889bf44f20afc319c7e.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50638c8058a4da2efe5e488f6a190ca3.png)
您最近一年使用:0次
6 . 等差数列
的前
项和为
,公差
,
,且
成等比数列.
(1)求数列
的通项
;
(2)求和
.
![](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/c4ce64685821c3e55c07f151996ca8c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1dfe5b322577f02fd19caab8cf20170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f06d2491d39e1c2f5557c838ef1b086.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)求和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f1bb74aa49a18bf93184588d040d0da.png)
您最近一年使用:0次
2021-07-29更新
|
485次组卷
|
2卷引用:四川省眉山市2020-2021学年高一下学期期末数学(文)试题
名校
7 . 在递增的正项等比数列
中,
和
是方程
的两个根,则
( ).
![](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/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd14d10d1929bb547d8e4a85fcee3a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
A.4 | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
2021-07-26更新
|
610次组卷
|
2卷引用:新疆乌苏市第一中学2020-2021学年高一(加强班)下学期期中考试数学试题
名校
8 . 若
是
与
的等比中项,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ef024c58becb626b823dfd3ee99c1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec9a109b4ff41dc4d7716fa776f450f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c925be255ca736a53b24d13ddede1a86.png)
A.2 | B.1 | C.![]() | D.![]() |
您最近一年使用:0次
2021-07-21更新
|
229次组卷
|
2卷引用:陕西省西安市西北工业大学附属中学2020-2021学年高一下学期第二次月考数学试题
9 . 已知a,b的等比中项为1.则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c925be255ca736a53b24d13ddede1a86.png)
A.![]() | B.1 | C.![]() | D.2 |
您最近一年使用:0次
2021-07-21更新
|
178次组卷
|
3卷引用:陕西省咸阳市高新一中2021-2022学年高一下学期第三次阶段性检测数学试题
名校
10 . 已知
,
,
,
成等差数列,
,
,
,
,
成等比数列,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3aab28a20b5bf47040aaec03b1eb550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3aab28a20b5bf47040aaec03b1eb550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7316dbb050b99d229a27a7146f3bfc1b.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
您最近一年使用:0次
2021-07-18更新
|
540次组卷
|
5卷引用:江西省赣州市赣县第三中学2020-2021学年高一下学期期末数学(文)试题
江西省赣州市赣县第三中学2020-2021学年高一下学期期末数学(文)试题江西省南昌市八一中学2020-2021学年高一5月份考试数学试题(已下线)考点01 等差数列-2022年高考数学(文)一轮复习小题多维练(全国通用)江西省铜鼓中学2020-2021学年高二(非实验班)上学期数学(文)试题河南省济源第一中学2022-2023学年高二上学期期末考试数学试题