世界公认的三大著名数学家为阿基米德、牛顿、高斯,其中享有“数学王子”美誉的高斯提出了取整函数
表示不超过
的最大整数,例如
.已知
,则函数
的值域为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/068bb59c16d730eecd7a67f92221ef80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9eac0c9d446e5ac1b89438b7b4739c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea69058d2f3c366e7314bd61fe519c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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更新时间:2024-01-18 17:26:30
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【推荐1】函数
在定义域内的零点个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a7c49ab3c9ec481185f2afb6d42878.png)
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解题方法
【推荐2】若不等式
对任意
恒成立,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933e48960857a63826188ac9cc6675cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998485ffeb46a0412ff1a0f814429257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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您最近一年使用:0次
单选题
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较易
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解题方法
【推荐1】定义:如果函数
在
上存在
,满足
,则称数
为
上的“对望数”,函数
为
上的“对望函数”,已知函数
是为
上的“对望函数”,则实数
的取值范围是
![](https://img.xkw.com/dksih/QBM/2015/3/27/1572042579607552/1572042585260032/STEM/45ffda6e82c747eeb9e8205547b7be78.png)
![](https://img.xkw.com/dksih/QBM/2015/3/27/1572042579607552/1572042585260032/STEM/ebf4e9ce1a514483b980d60cb50be9a3.png)
![](https://img.xkw.com/dksih/QBM/2015/3/27/1572042579607552/1572042585260032/STEM/cd873b833d5a40e4b96b1c4c30055027.png)
![](https://img.xkw.com/dksih/QBM/2015/3/27/1572042579607552/1572042585260032/STEM/04225581eb3e485098159be65fc0816c.png)
![](https://img.xkw.com/dksih/QBM/2015/3/27/1572042579607552/1572042585260032/STEM/48f1fa7a94ea432984b43c51e234f54d.png)
![](https://img.xkw.com/dksih/QBM/2015/3/27/1572042579607552/1572042585260032/STEM/ebf4e9ce1a514483b980d60cb50be9a3.png)
![](https://img.xkw.com/dksih/QBM/2015/3/27/1572042579607552/1572042585260032/STEM/45ffda6e82c747eeb9e8205547b7be78.png)
![](https://img.xkw.com/dksih/QBM/2015/3/27/1572042579607552/1572042585260032/STEM/ebf4e9ce1a514483b980d60cb50be9a3.png)
![](https://img.xkw.com/dksih/QBM/2015/3/27/1572042579607552/1572042585260032/STEM/fa8d105014e340cfa518a8ef158ce717.png)
![](https://img.xkw.com/dksih/QBM/2015/3/27/1572042579607552/1572042585260032/STEM/8dfe38bfe43f415db0cd03c5187cc684.png)
![](https://img.xkw.com/dksih/QBM/2015/3/27/1572042579607552/1572042585260032/STEM/002d40b250214980afc35e34fa6e5b86.png)
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解题方法
【推荐2】在实数的原有运算中,我们定义新运算“
”为:当
时,
;当
时,
.设函数
,则函数
的值域为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7d51315fcca519cb58bacd0040d7de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1132de2e8913dba9c5cc2396ecb09fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561244c91d64d935e553731dfcdae08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b25c3b680952ee9054a498174a545d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/855c73c1c42a36cec75e38e75c47512b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
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