已知数列
满足
,
.
(1)求
的值,由此猜测
的通项公式,并证明你的结论;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eee6e53ca155cf0f623a657f8ed1476.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed529240a883f68f0921e818addeb9c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d28e6eda78af75edf843e5488d03f1.png)
13-14高二下·重庆·期中 查看更多[2]
更新时间:2016-12-03 01:39:44
|
【知识点】 数列的综合应用
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较难
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【推荐1】已知数列
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69fd057c33c69c98fd54c2514a600d51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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解答题-证明题
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较难
(0.4)
【推荐2】已知数列
满足:
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,
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(1)求证:数列
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(2)求证:数列
为递增数列;
(3)若当且仅当
时,
取得最小值,求
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737c1047a14cee12a6671383e244fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474a06c31af68a7e888c5bc5b00f3f8d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84144d13f952dea934039072202c8e00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a86c32a512fd3866109dbdc9b258ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a89d1f32c1605cfdb8e8855051b9f6ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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![](https://img.xkw.com/dksih/QBM/2015/4/20/1572076167094272/1572076172795904/STEM/151f58378cf94634ac3d6c7bd836f491.png)
(2)求证:数列
![](https://img.xkw.com/dksih/QBM/2015/4/20/1572076167094272/1572076172795904/STEM/4e4177b5a11d4ee9b5d2a8d05abcce00.png)
(3)若当且仅当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
您最近一年使用:0次