定义区间
,
,
,
的长度均为
,多个区间并集的长度为各区间长度之和,例如,
的长度
.用
表示不超过
的最大整数,记
,其中
.设
,
,若用
分别表示不等式
,方程
,不等式
解集区间的长度,则当
时,有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/205e3835fe3c3cac138944df59d42561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec826cdf89516490ca86561c10ab38a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd21eb8d752a4b6d66e93e040a74a4d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67466474e70982fa28d80257657551a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd07901c1c222b251d84d3aaf6faa260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d7f91dda3a7980f760792f40f17c3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e567afdff580c37715672663a488d77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac7a017b650472c485f58b576367376c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0be07495dbc744e1ecabac66f748218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e1dc5a890132d6353e4ce16ada58ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85b590af2e343fd962350dacffd1637.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367c96a0ff95b92877eda2a7c98871e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7856ee6dd4ec9d77d24e2c138fd4ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8bfb563f79688d136e0cb958b5153c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6114c9e15216f4646012c22346583c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18879e4dd29651e5f747e7f827b9e849.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
2011·北京朝阳·一模 查看更多[2]
更新时间:2016-11-30 17:42:03
|
【知识点】 基本不等式
相似题推荐
单选题
|
较易
(0.85)
【推荐1】为落实“精准扶贫”任务,某扶贫干部帮助帮扶贫困村筹集资金
万元,购进了一条配件加工生产线.已知该生产线每年收入
万元,第一年生产成本为
万元,从第二年起,每年生产成本比前一年增加
万元.若该生产线
年后年平均利润达到最大值(利润=收入-生产成本-筹集资金),则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c748e40ba21ac5063d3bccaa57ef278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac7333ca45e77593ede4aa1ff359307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】下列说法正确的是( )
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() |
您最近一年使用:0次