已知数列
满足:
,
.设
,数列
的前
项和为
,则
最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae604f86a3cc9e72ff082f0e382ef878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac8419cf6c0e1d70ea5f5a9eb6dad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c4ca41def22dcbe39612798d98297b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.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/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
更新时间:2023-05-08 21:41:32
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【推荐1】已知函数
是
上的奇函数,函数
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上无零点的偶函数,若
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上恒成立,则
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【推荐2】已知定义在
上的函数
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项和
超过
的最小自然数
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【推荐3】已知存在实数x,使得不等式
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【推荐1】若
数列
的前n项和,且对任意的正整数n,有
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___________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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【推荐2】已知数列
的前
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__________ .
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【推荐1】已知等差数列
的前
项和为
,
,
和
的等差中项为
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为_______________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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【推荐2】现取长度为2的线段
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为直径作半圆,所得半圆的面积之和为
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______ .
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