10-11高一下·吉林长春·期末
1 . (Ⅰ)(Ⅱ)两道题普通班可以任意选择一道解答,实验班必做(Ⅱ)题
(Ⅰ)已知等比数列{an}中,a2
,公比q
.
(1)Sn为{an}的前n项和,证明:sn![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce54efecc99dd8912d61310e261a32b.png)
(2)设bn=log3a1+log3a2+…+log3an,求数列{bn}的通项公式.
(Ⅱ)设正数数列{an}的前n项和为Sn满足Sn
(an+1)2(n∈N*).
(1)求出数列{an}的通项公式.
(2)设bn
,记数列{bn}的前n项和为Tn,求Tn.
(Ⅰ)已知等比数列{an}中,a2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34efd0021d06e31448496f3673eb2a45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34efd0021d06e31448496f3673eb2a45.png)
(1)Sn为{an}的前n项和,证明:sn
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce54efecc99dd8912d61310e261a32b.png)
(2)设bn=log3a1+log3a2+…+log3an,求数列{bn}的通项公式.
(Ⅱ)设正数数列{an}的前n项和为Sn满足Sn
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d06d924ecb4611c95c346342e62aa25.png)
(1)求出数列{an}的通项公式.
(2)设bn
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09aa13b86458394928d2dfd0b12c8801.png)
您最近一年使用:0次
11-12高一下·吉林长春·期中
名校
2 . 已知
是等差数列
的前
项和,且
.
(1)求
;
(2)令
,计算
和
,由此推测数列
是等差数列还是等比数列,证明你的结论.
![](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/0ce3ab3bfad90de88b45fc2c2be09c5b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c1b8eb4382c751dcc16aee786e6865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2bc85af36f64be115dd7c5d88fac6a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57483e04fd1840c87ac5325157149877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
您最近一年使用:0次
2016-12-01更新
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3卷引用:2011-2012学年吉林省长春外国语学校高一下学期期中考试数学试卷
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