1 . 根据下列数列的特点,用适当的数填空:
,
,______ ,
,
,______ ,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
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解题方法
2 . 将正整数排成如图所示的数阵,其中第
行有
个数,如果2023是表中第
行的第
个数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98aa5f1acb67ec4580d240c2525e4d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/10/f9d1b263-4246-4605-bf9d-feb6b1e05d74.png?resizew=196)
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3 . 已知数列
满足
,且
,则满足
的整数
的个数是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f390c02b06e3763311664ecb391c55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c94259fc330e668b83ff2b3daff012c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/273b5f21c514adffe93c3f601277c073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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名校
4 . 已知数列
满足:
,
,
,则
的前2021项和为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe7bdaaf8b0adf10bf2ef6c1255b1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f966272f7781790ff27e40db6b525253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3172a2dfbce3ce32fd909ff548e75b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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5 . 已知正整数数列
满足
则当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9819a5cf438f4bfc2ac10c61c3bb55f4.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/623e98eda1fcde59c0f4b0b54a74c600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdf53108bee755f5aa9a34ea4d163e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9819a5cf438f4bfc2ac10c61c3bb55f4.png)
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6 . 定义
表示实数
中的较大的数.已知数列
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d8944b0abe122bf859fe34efd4cff42.png)
,若
,记数列
的前
项和为
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455f756bd43cd7638a3ecfb77dd8662f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d8944b0abe122bf859fe34efd4cff42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ceec776c679c9af0dbbe47b5114f31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a17b2e3ead0ac07eb42640c13bd2b36e.png)
![](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/18ba5d7d7a066e3a50bf47f8360ef51a.png)
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名校
7 . 已知数列
满足:
,若
,则
=_________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734974707e801944f23642a162c5f070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fd7e75832ae791087e27dee9f4405b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaec3004937aab88c44e66753caab782.png)
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2019-11-04更新
|
378次组卷
|
4卷引用:贵州省遵义市凤冈二中2018-2019学年高一下学期第一次月考数学试题
贵州省遵义市凤冈二中2018-2019学年高一下学期第一次月考数学试题北京师范大学遵义附属学校2020-2021学年高一下学期第一次月考数学试题上海市曹杨二中2019-2020学年高二上学期10月月考数学试题(已下线)专题二 数列中求通项的常用方法-2020-2021学年高中数学专题题型精讲精练(2019人教B版选择性必修第三册)
名校
8 . 数列
满足
,
,其前
项积为
,则
=_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c439950003919673f5cb5901697f52ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://img.xkw.com/dksih/QBM/2016/7/27/1572941490282496/1572941496549376/STEM/cbe4ebdb729e4ce3bdb41512d3a2434f.png?resizew=32)
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2016-12-04更新
|
600次组卷
|
4卷引用:2016届贵州省贵阳六中高三5月高考模拟理科数学试卷
9 . 在数列
中,
(
),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c612fb2fed7c255a981cff9013063f4f.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8bd56dcd6f3f374ea5032ea337c47a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c612fb2fed7c255a981cff9013063f4f.png)
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10 . 设数列
满足
,
,则该数列的前
项的乘积![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01735ca16af3791ab59932acf8539c69.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d815a2fbe168632564f2f02360d4536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6241896e3bb87fa99d76eb2674ce2256.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01735ca16af3791ab59932acf8539c69.png)
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