名校
解题方法
1 . 某公司售卖某件产品的标准为每个代理商每月购买少于1000吨,每吨10元,每月购买不少于1000吨,每吨7元.已知甲、乙两代理商该月一共购买了2000吨,设甲购买了
吨,甲、乙两代理商购买产品共花费了
元,则
关于
的函数为______ ,若甲、乙两代理商购买产品共花费了14000元,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3b521c359d5a9b04b004b3a2ee267a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
您最近一年使用:0次
2022-11-04更新
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161次组卷
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5卷引用:四川省峨眉第二中学校2022-2023学年高一上学期11月月考数学试题
四川省峨眉第二中学校2022-2023学年高一上学期11月月考数学试题河南省豫南名校2022-2023学年高一上学期期中联考数学试题福建省仙游县枫亭中学2022-2023学年高一上学期10月月考数学试题(已下线)第13讲函数的应用(二)(5大考点)(1)(已下线)重难点03函数(15种解题模型与方法)(2)
名校
解题方法
2 . 对
,
表示不超过x的最大整数.十八世纪,
被“数学王子”高斯采用,因此得名为高斯函数,人们更习惯称之为“取整函数”.例如:
,
.对任意实数x,令
,
,进一步令
.
(1)若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353812581c743c7f264fc9de12f9ef79.png)
______ ;
(2)若
,
同时满足,则x的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7179c645736d68c90023f83d7f11ed01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797715acd30d07aabbed52bd10b234e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a6c086cd67c729ec094c21c0d45a5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b68a5ab679a821f2946504322b8ad201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90aa0e5570bf4537beb04ea0a43d4928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24511ec05889083dc061247188d27644.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ab3398c49fe2c426dea5ee5360b548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353812581c743c7f264fc9de12f9ef79.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0001eeed6d8da4c2b51f7f8bf8c181e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de0cf78f2ad33125510a35f0b3a2192.png)
您最近一年使用:0次