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2019高三·全国·竞赛 查看更多[1]
更新时间:2018-12-28 21:00:39
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相似题推荐
解答题-问答题
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适中
(0.65)
【推荐1】设集合
,证明:对任意
,都存在
和正整数
使得
,其中,
表示不超过实数
的最大整数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08529a9da4863a1cde8a8ad89bdf7531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d5ec9ad92f37e64eccce922ab1b14e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb8dc6eb2d22e07ee5108746161eba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa58f46ec759a37cbe9852e2308da358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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解答题-证明题
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适中
(0.65)
名校
【推荐2】(1)已知集合
,任意从中取出k个四元子集
,均满足
的元素个数不超过2个,求k的最大值.(举出一个例子即可,无需证明)
(2)已知集合
,任意从中取出k个三元子集
,均满足
的元素个数不超过一个,求k的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f4949a8f15f43c0adbd5b86d935a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afdee66380bcaf6444095a37e6dc2052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738aa208e410305523fa64b8518ba6b2.png)
(2)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1402be16d42c77f5eb8e12f1d5723690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afdee66380bcaf6444095a37e6dc2052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738aa208e410305523fa64b8518ba6b2.png)
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解答题-问答题
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适中
(0.65)
【推荐2】若存在实数
,
,…,
满足
,
,
,求正整数
的所有可能的值.
![](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/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deca7f63af83b388741b2a406cbd3d19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2479d2134130f60740e9cb89a62872aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77423758d1d1e84adc6643f965f832e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】设存在
个整数
,使得
,且
.求正整数
的所有可能取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2b043b989216035c6fd985f1dd6a3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fccf8b96c37f86af304f7d8d02d6b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac7be7b81d00d52a72c594199ccc989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】已知正实数
满足
,求证:在不等式
中,至少有两个是成立的.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14ef04246ab284234ee42744d3e36e4c.png)
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