已知数列
满足
.
(1)求
的通项公式;
(2)记数列
的前
项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e47f502ab366a9338e09a8a8eed3802d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
(2)记数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2767882820f4ba0defde0e412adb747f.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/8243579ea8c55a28c5742f3dd2037439.png)
22-23高三上·江苏南京·期末 查看更多[2]
更新时间:2023-03-07 19:03:17
|
相似题推荐
【推荐1】已知数列
,若
为等比数列,则称
具有性质P.
(1)若数列
具有性质
,且
,求
的值;
(2)若
,判断数列
是否具有性质
并证明;
(3)设
,数列
具有性质
,其中
,试求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa0dc13236eaa2bd0cdc0f24beea11fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a4970320426dc9117a94237e607475f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ef8f3a003fc34b75b71e5b6992cee6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/872e608c4f382670965d2876ae49fb35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864fb22e698e7595dc8c8aaa7cd1d83b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24eabf172a5b445a7618a212931bddc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
您最近一年使用:0次
【推荐2】已知数列
满足:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c3dbb4d6c179ffc3f61eeffa452c2a.png)
,
,且
.
(1)若
,求数列
的通项公式;
(2)若
,求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c3dbb4d6c179ffc3f61eeffa452c2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ea7ba6569f7942368a151283e5658e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c4e9e92b3cad18b4b6ecf67979cae5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/527bd6adefbb15deb6ad829d7584d072.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c656ffb75363e18d211963695739c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐1】已知数列
满足
,且
.
(1)求数列
的通项公式;
(2)设
,记
的前项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eba83359167d8ca8c9eafa8a23f34a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b93ce1c37f1841ccbb1998ed059bdf.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b31c12673390783878476b8213e86ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94351ce858fa3f3a09cfadc2d23d7253.png)
您最近一年使用:0次
【推荐2】已知数列
满足:
,正项数列
满足:
,且
,
,
.
(1)求
,
的通项公式;
(2)已知
,求:
;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9613f8aa0a503b83e25141127a19efe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7bdaf9fa374c130456f462ee49c4ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ffaa768f1232ff14bcd2cdd438ce53a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1273751a0b5a984cf01c2d0e00e474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb27d03d22ec55dbf33d6d9d3c44854f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b97aef7af01785f58caee047c55187e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ca23ce02583bd8fe3b9d06d99e0e3c.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5fca0c9355067a7b3e8d60bf0573e40.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
【推荐1】已知负数
和正数
,且对任意的正整数n,当
≥0时, 有[
,
]=
[
,
];当
<0时, 有[
,
]= [
,
].
(1)求证数列{
}是等比数列;
(2)若
,求证![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b49f9e85666ecd8f7b548d6e443a7b.png)
;
(3)是否存在
,使得数列
为常数数列?请说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9e40a0d66a9d04f5775b0d869bcbd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95931effbd59c43e8ed1ea09962b84f.png)
[
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9e40a0d66a9d04f5775b0d869bcbd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9e40a0d66a9d04f5775b0d869bcbd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95931effbd59c43e8ed1ea09962b84f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9e40a0d66a9d04f5775b0d869bcbd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(1)求证数列{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c6bec82a597ce064bcd01030a3307bf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/899397542606e2eb95c614596b9811a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b49f9e85666ecd8f7b548d6e443a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b833a5141d6701931594b1287835e0.png)
(3)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12cc532e48db0ae16b1fdce387386f93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
【推荐2】(注意:在试题卷上作答无效)
已知数列
中,
.
(Ⅰ)设
,求数列
的通项公式;
(Ⅱ)求使不等式
成立的
的取值范围.
已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cb0a30bfe0b5c36ca9ef87ee12eaa82.png)
(Ⅰ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a596fab7cf61a25591dd4d81dbc617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
(Ⅱ)求使不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dce6905169349f3369e45914dfdf5ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次