10-11高一下·吉林长春·期中
解题方法
1 . 已知数列
的前
项和为
,且对于任意
,都有
是
与
的等差中项,
(1)求证:
;
(2)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/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d637866200a82ea682bba7da5a9d9f6.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/456acf42591409e1b7dc6fe08f4672e4.png)
您最近一年使用:0次
2 . 已知数列
,
,
,
.记
.
,求证:当
时,(Ⅰ)
;
(Ⅱ)
;
(Ⅲ)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573167655288832/1573167661637632/STEM/8418292a790945568bf2019e5331a48d.png)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573167655288832/1573167661637632/STEM/78e8c5f399ac475e8eaf7cef22a5f206.png)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573167655288832/1573167661637632/STEM/01bacf3d936f4c2ca113465caf4c1fb0.png)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573167655288832/1573167661637632/STEM/e9f09939d6c544b88dd3b482f7c4e233.png)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573167655288832/1573167661637632/STEM/9daedfffeecd42958fbbb47d4ed37462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb89170b9a7f62a57e23be398832c6e5.png)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573167655288832/1573167661637632/STEM/5dd62eb761a948c48f3e330c16388121.png)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573167655288832/1573167661637632/STEM/f6c627d2e627480f820c60e06276993c.png)
(Ⅱ)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573167655288832/1573167661637632/STEM/ea104517fa9544a5ba89e425d48e6cbc.png)
(Ⅲ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f04ae7e36a36e79421c52ee1fe60ab.png)
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解题方法
3 . 函数
满足:对任意
,都有
,且
,数列
满足
.
(1)求数列
的通项公式;
(2)令
,
,记
.问:是否存在正整数
,使得当
时,不等式
恒成立?若存在,写出一个满足条件的
;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c70c1c83ca7cfd56db46b3647889bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80a5c8b695a7ced5c4178abb5ebe495d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896df31f80127adbae738b3a014bd4e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065054f4e163585d630aa42cb6323a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5863a45913b95c0a26f922bbfe41ad2.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065054f4e163585d630aa42cb6323a3e.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd51a54ec3b73b903f780c68dc714b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33814e4449e1a718a6adc4670f653711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/513971773c0b2a4bc35bae94467a0f41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564265ae553c03b3cd9f53cdb161e4e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4869dcca30f2d70bb6142deff1269321.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2016-12-05更新
|
791次组卷
|
4卷引用:2015-2016学年四川成都外国语学校高一下期末数学理试卷
2015-2016学年四川成都外国语学校高一下期末数学理试卷2016-2017年辽宁盘锦高级中学高二理10月月考数学试卷全国高中数学联赛模拟试题(十)(已下线)专题06 数列在高考中的考法(难点,十一大题型+过关检测专训)-2023-2024学年高二数学《重难点题型·高分突破》(人教A版2019选择性必修第二册)
4 . 已知数列
中,
,其前
项和
满足
,令
.
(1)求数列
的通项公式;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2de079a76e0b7def9f379b23a446d62.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/cdef28abf3cbeae1b0ffceec7866f634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d005409790b3192705a181b2c8e7dfed.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e37a2adb69dc49bb586de6477a1e36aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316f058f7844edfa784e4cbbe830c43f.png)
您最近一年使用:0次
名校
解题方法
5 . 已知数列{an}的前n项和Sn满足Sn=2an-n.
(1)求数列{an}的通项公式;
(2)设
,记数列{bn}的前n项和为Tn,证明:
(1)求数列{an}的通项公式;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c9dc190d0856e27a1cc225f766808e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc35cadd404e73a7c95cc49d417139cf.png)
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2016-12-04更新
|
916次组卷
|
4卷引用:2015届浙江省嘉兴一中五校高三上学期第一次联考理科数学试卷
名校
6 . 已知数列
的前
项和
满足:
(
为常数,且
,
).
(1)求
的通项公式;
(2)设
,若数列
为等比数列,求
的值;
(3)在满足条件(2)的情形下,设
,数列
的前
项和为
,若不等式
对任意的
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.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/95a966ff380354a3ee8a35c9c2618161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/960728f9d01988e099c3cff6bab076e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301dd9f9a4fa231560c8bd67b6e5b775.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c252bf4d0af9a612f6649a643d9c0ca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)在满足条件(2)的情形下,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d1e1f73432895c2807ee3d829c7ca30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c88a7ef007c78a93e33bd77c4396626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ddbae2be6b01707ffa355089d59c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5235e9027fd05f69f760241e8f08a13c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2016-12-04更新
|
1164次组卷
|
4卷引用:2017届江苏泰州中学高三摸底考试数学试卷
解题方法
7 . 设数列
首项
,
为
的前
项和,若
,当
取最大值时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38685aad9bfde59bf99d48e531c314df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.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/cefc9997db8203923cf125443bd493da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
A.4 | B.2 | C.6 | D.3 |
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8 . 已知数列
是等差数列,其前
项和为
,数列
是等比数列,并且
,
.
(1)求数列
和
的通项公式;
(2)设
,求数列
的前
项和
.
![](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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f478acd1cb5b5a7f66d10b4f318d78d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74dbb10cee9a722f6551d6ee4f41ca84.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69cbc636c8f8bc4722068ad67968e14b.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
2016-12-04更新
|
312次组卷
|
3卷引用:2016届山东省冠县武训高中高三5月月考理科数学试卷
9 . 若数列
满足
,则称数列
为“平方递推数列”.已知数列
中,
,且an+1=an2+2an,其中
为正整数.
(1)证明数列
是“平方递推数列”,且数列
为等比数列;
(2)设(1)中“平方递推数列”的前
项积为
,即Tn=(a1+1)(a2+1)…(an+1),求
;
(3)在(2)的条件下,记
,求数列
的前
项和
,并求使
的
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5eaabd730c048ddab34542386ce025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e49108f8d3a5fb4a6b8d1ae1ec7972e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5eaabd730c048ddab34542386ce025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366dfedff1a1a96ec27650375b680059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1413bc2c9162794f2dde9193684696e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e903a9cc9e3a669d7a3f4b40e09bbe.png)
(2)设(1)中“平方递推数列”的前
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/406371cec49a82dff63e503c3122be03.png)
(3)在(2)的条件下,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d8ae40082c3abb1688ffc6be78ad05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://img.xkw.com/dksih/QBM/2016/8/4/1572958544216064/1572958549925888/STEM/38bd5d7afdec4e65982c61e868fe16be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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真题
10 . 已知数列{an}的首项为1, Sn为数列{an}的前n项和,Sn+1=qSn+1,其中q﹥0,n∈N*.
(Ⅰ)若a2,a3,a2+ a3成等差数列,求数列{an}的通项公式;
(Ⅱ)设双曲线
的离心率为
,且
,求
.
(Ⅰ)若a2,a3,a2+ a3成等差数列,求数列{an}的通项公式;
(Ⅱ)设双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e692bfc8107c4819e98af3f74c89db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8f567549e66b339299dbf8369ab5812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4ee8eae9288ec8fb1b017f4278aa85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e66a8a06ccb23fc97bfb6f006361315.png)
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