已知函数
.
(1)若
,证明:对于任意的两个正数
,
,总有
成立;
(2)若对任意的
,不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/064e5acbc417f271f61c0e12a2cdb9a2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de77f0d4779fe58836384d7b60f91cc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29a7901661c71b40b5601ad0c0f6dacc.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfe44972e8bf50ec9d250f298bbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62552b99551430dca3b0c0c30314aa0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
2009高三·辽宁·竞赛 查看更多[1]
(已下线)2009年全国高中数学联赛辽宁省初赛试题
更新时间:2018-12-24 18:28:00
|
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解答题-问答题
|
适中
(0.65)
【推荐1】
是定义在
上且取值为整数的严格增函数(如果任意
、
,当
时,有
,则称
是
上的严格增函数),当
、
互质时,有
.若
,试求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3830ea6ea58c99a0fc1adadccac0fab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2f24b4fa5308650a244d954f78f09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/3798eaff56f2cbe1fb1d4ea820a84d6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0db460f56ad7c32b239bd9b5c8a930b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb18fc4c0784fee7554f62a357e8b7bf.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】已知函数
.
(1)求函数
的单调区间;
(2)若对一切实数
,有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99920ea1c45dbf4ef97b5abebf4b6ceb.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若对一切实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b9bcc4918dc9a67ddb290702f8a25ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次