把不超过实数
的最大整数记为
,则函数
称作取整函数,又叫高斯函数.在区间
上任取实数
,则
的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aacac2cf1dd70cc65b1ca535a32c316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93a3c0898f05d9f27064d3bd635797ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26b12103480b3ceb439ca8d0ab7e0a1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-05-05 20:07:38
|
相似题推荐
单选题
|
较易
(0.85)
名校
解题方法
【推荐1】在
中任取一实数作为x,则使得不等式
成立的概率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab90f84a9b6ec1334ce6fc12495ec218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04a9d97a0bbaa3b815e591127cec8470.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】设函数
,若从区间
上任取一个实数
,
表示事件“
”,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/992a45dcac87eeb949b409602a95917a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df4390a7af6318d0ed2a94865d208e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc4b333490a56fcabff84ee9c00fe56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/855699d6b7de07ce257b464219b5f3eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/992a45dcac87eeb949b409602a95917a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐1】已知定义在R上的函数
,其中
表示不超过
的最大整数,
,给出下列三种说法:
①
,
是一个增函数;
②
,
是一个奇函数;
③
,
在区间
上有唯一零点.
其中正确的说法个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d9d71506da2fa21f440527f709b63d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd57dd79e746b9778ad15cb09f004888.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd57dd79e746b9778ad15cb09f004888.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd57dd79e746b9778ad15cb09f004888.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
其中正确的说法个数是( )
A.3 | B.2 | C.1 | D.0 |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐2】规定
表示取a、b中的较大者,例如
,
.则函数
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ad6b511253288bb1a39cf30a82e644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d6e47f38abd3123cee12543cec26163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7356c0a69f2e941e9752346bd5d4166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53c3ea037450bf82adf001481b5dd81.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次