已知数列
和
满足
,
,即数列
的前n项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434f451cbc6a57287ddb0cedd6869194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dc72a562d0fa6b380d16cdcf1cb14f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec4bdc2a6d4fc387dc621f0b5a268c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.png)
更新时间:2019-12-27 09:54:04
|
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【推荐1】定义函数
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表示不小于
的最小整数,如
,
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中元素的个数为
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【推荐2】数列
满足
,当
时,
,则是否存在不小于2的正整数
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的值;若不存在,就填写“不存在”_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
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解题方法
【推荐1】已知数列
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
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解题方法
【推荐2】已知函数
的定义域
且值域为
的子集,且
单调递增,满足对任意
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_________ .
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解题方法
【推荐1】已知数列
满足
对于任意
恒成立,则数列
前n项和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d854c19ea268e064636de612c914ecb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c7cff8eadcec6863f526d0ad23e77fb.png)
您最近一年使用:0次
【推荐2】已知数列
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,
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________ .
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