2014·江苏淮安·一模
1 . 若等差数列
和等比数列
的首项均为1,且公差
,公比
,则集合
的元素个数最多有_____ 个.
![](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/c4ce64685821c3e55c07f151996ca8c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a65832d91e72ee61565fe6feb19728.png)
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2014·四川成都·一模
解题方法
2 . 已知函数
的定义域为
,给定两集合
及![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
,则集合
的元素个数是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d6b2148fae0c835f21c0c8f2131f9bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/229e328799fc76704b032e95ac4ecb95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc905f4450c237e2b8f4a3e58ac0aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
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10-11高三上·湖南长沙·阶段练习
3 . 给定集合
,定义
中所有不同值的个数为集合A两元素和的容量,用L(A)表示,若
,则L(A)=___ ;若数列{an}是等差数列,设集合
,则L(A)关于m的表达式为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788369597548a0e4b6601188ccb25074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98cd3537c4a2a5f6bf8d2b973a10726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9010bb095765c0b0be1e1ecf5dacbf10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a873666089d9a9ca1bb14e2d00325d.png)
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