名校
1 . 已知首项为2的数列
的前
项和为
,且
,若数列
满足
,则数列
中最大项的值为__________ .
![](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/669c3ad64d7028bac39e4d579cce09b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5c86ad6b75032da11bde2fe2906024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
您最近一年使用:0次
2018-07-09更新
|
1205次组卷
|
6卷引用:【全国市级联考】安徽省蚌埠市2017-2018学年高一下学期期末考试数学试题
【全国市级联考】安徽省蚌埠市2017-2018学年高一下学期期末考试数学试题(已下线)2018年9月30日《每日一题》一轮复习(理)-每周一测(已下线)2018年9月30日《每日一题》一轮复习(文)-每周一测(已下线)2019年9月29日 《每日一题》2020年高考文数一轮复习-每周一测(已下线)2019年9月29日 《每日一题》2020年高考理数一轮复习-每周一测广西南宁市第三中学(五象校区)2020-2021学年高一下学期期中考试数学试题
2 . 已知数列
满足
,
.
(1)设
,证明:
;
(2)求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1bca3fd14967acd9bdecdbb70e3e80.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a240f46dc675bab4fb80f6d6ecd9d71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26c9e479280aee190bf9188299547d9.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46359a8e4a2f88fed097ca8eebb38b16.png)
您最近一年使用:0次
2018-07-07更新
|
433次组卷
|
2卷引用:【全国市级联考】重庆市开州区2018年春高一(下)期末测试卷数学
3 . 已知数列
满足
,
.
(Ⅰ)证明:
是等比数列;
(Ⅱ)证明:数列
中的任意三项不为等差数列;
(Ⅲ)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3cfc11343590efb61c88b627f479be9.png)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098d9e65e9676e4386c5d861c8eb03b5.png)
(Ⅱ)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(Ⅲ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6257827fd179f2f03f23d5a9f75bc0.png)
您最近一年使用:0次
名校
4 . 设数列
的前
项的和为
,且满足
,对
,都有
(其中常数
),数列
满足
.
(1)求证:数列
是等比数列;
(2)若
,求
的值;
(3)若
,使得
,记
,求数列
的前
项的和.
![](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/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac657ea5bbf4b237a30e4074c76cc81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/180860a74f8c29fe0b290e670b66a39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dab9e79198239cda875305fd6809b5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8586c5db6e82cd588a6d1ad9605ed4.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e93281edb215675328570aeed1f4d45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/769c0f627abaf3793d2e489c251e10fa.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e2c8b9d6fe15a9e9e0f43c4533cddee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f12c6c3ecaefcf0bcc255c250f6d295f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9d813c3aaa98d0de74d2dc8a699724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a39820f77807d8146c19c5dcdfbfbed.png)
您最近一年使用:0次
名校
5 . 已知数列{an}满足:a1=1,|an+1-an|=pn,n∈N*,Sn为数列{an}的前n项和.
(1)若{an}是递增数列,且a1,2a2,3a3成等差数列,求p的值;
(2)若p=
,且{a2n-1}是递增数列,{a2n}是递减数列,求数列{an}的通项公式;
(3)在(2)的条件下,令cn=n(an+1-an),求数列{cn}的前n项和Tn.
(1)若{an}是递增数列,且a1,2a2,3a3成等差数列,求p的值;
(2)若p=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(3)在(2)的条件下,令cn=n(an+1-an),求数列{cn}的前n项和Tn.
您最近一年使用:0次
6 . 已知等差数列
与等比数列
是非常数的实数列,设
.
(1)请举出一对数列
与
,使集合
中有三个元素;
(2)问集合
中最多有多少个元素?并证明你的结论;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b45ed42bacc8c561a88b41d2db90a88.png)
(1)请举出一对数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)问集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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名校
解题方法
7 . 已知数列
,
,
为数列
的前
项和,向量
,
,
.
(1)若
,求数列
通项公式;
(2)若
,
.
①证明:数列
为等差数列;
②设数列
满足
,问是否存在正整数
,
,且
,
,使得
、
、
成等比数列,若存在,求出
、
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195431ccf2756a0db26f14b7b91a32a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a425978da20cebf8c4c63953579e7b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c4f597c8795ffce8e7ac6901e7b1fa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d290fd0330c48f4663b8760cb5aaaa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e347e3cedaee79da7dd70e179454a1a7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa0d66f5e14ad7bd89cff2a99ffd826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1803610026ab102c819e08a6372b36e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ca38c30f4b5508425f943bbd74099d.png)
①证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28ef6f1b2279af482557a8ea46f2e43.png)
②设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/733969643c55ec0ddfddd781a6545778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4d342421b22c418255fc8eb925fd37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a159de0b2d9eb1ae0b7e664e64d3c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236e9c2811fe82b86fc4820fb81e6eb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d527da868df222460be5f09c4e15e4c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b304b3274b8713964741367c6b85a911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c26ec59a4f997e03ab1d9345eec4b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec8c0b2867fb7995316c483fe04a604e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829442c6473c94fde041595bc18530d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a159de0b2d9eb1ae0b7e664e64d3c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab4717e4827480f0f6f4ded85e52eab.png)
您最近一年使用:0次
解题方法
8 . 观察如图:
1,
2,3
4,5,6,7
8,9,10,11,12,13,14,15,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ac818323f3f148a0b58be249b5dd4a.png)
(1)此表第
行的最后一个数是多少?
(2)此表第
行的各个数之和是多少?
(3)2018是第几行的第几个数?
(4)是否存在
,使得第n行起的连续10行的所有数之和为
若存在, 求出
的值;若不存在,请说明理由.
1,
2,3
4,5,6,7
8,9,10,11,12,13,14,15,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ac818323f3f148a0b58be249b5dd4a.png)
(1)此表第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a425978da20cebf8c4c63953579e7b35.png)
(2)此表第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a425978da20cebf8c4c63953579e7b35.png)
(3)2018是第几行的第几个数?
(4)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ad4897a05a6a26b10e2d8379137fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c47df3b0e6dfed8da55db799563c60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a425978da20cebf8c4c63953579e7b35.png)
您最近一年使用:0次
名校
9 . 在数列
中,
,
,设
.
(1)证明:数列
是等差数列;
(2)求数列
的通项公式;
(3)求数列
的前
项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c8beec5ace6801ab3507ea83c163dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8182f57c43fd1d8fb13161224687c469.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次