名校
1 . 已知以
为首项的数列
满足:
.
(1)当
时,且
,写出
、
;
(2)若数列
是公差为-1的等差数列,求
的取值范围;
(3)记
为
的前
项和,当
时,
①给定常数
,求
的最小值;
②对于数列
,
,…,
,当
取到最小值时,是否唯一存在满足
的数列
?说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b020f45693cb1f85ed1b793a60f86a14.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c492ef0c41f7a2f4c15fb27df44a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/728e3a4f5e54524bbabe2a4eda052c7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ad75ec865e9e64aafe281d4dd91899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(3)记
![](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/d1bae03ee4ac75dacfb026290e4207dd.png)
①给定常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7c8f4a4bc521392c407efb60d9bdc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f4a600ed8be6911a37d279bd23dd798.png)
②对于数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eed39c7d611309b01476c15ab242308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7581cdb1703687ff550247f6af8a985a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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2019-10-23更新
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496次组卷
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3卷引用:4.3利用递推公式表示数列(第2课时)(作业)(夯实基础+能力提升)-【教材配套课件+作业】2022-2023学年高二数学精品教学课件
(已下线)4.3利用递推公式表示数列(第2课时)(作业)(夯实基础+能力提升)-【教材配套课件+作业】2022-2023学年高二数学精品教学课件上海市交通大学附属中学2019-2020学年高二上学期9月月考数学试题上海市大同中学2023-2024学年高一下学期5月月考数学试题