能被5整除的
个不同的正偶数与能被3整除的
个不同的正奇数的总和为
.对于所有这样的
、
,
的最大值为123.问
的最大值为多少?请证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269ec6fade187b9a93eaaef213c3050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
2018高三·全国·竞赛 查看更多[1]
更新时间:2018-12-20 23:02:27
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【知识点】 柯西不等式
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解答题-问答题
|
适中
(0.65)
【推荐1】已知存在整数
,使得
,求所有可能的
的值及相应的整数解
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9016dc7bc5689aaca108ace6964c7bd4.png)
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您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】设
,
,…为正实数数列,且对所有的正整数
,均有
.证明:对所有的正整数
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.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e167b43045b3297248e334c41c621b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9730ff66accc622340a4b038933bf1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e167b43045b3297248e334c41c621b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb31a95aaed5c6425ea1ffc2a1a17d7e.png)
您最近一年使用:0次