1 . 指示函数是一个重要的数学函数,通常用来表示某个条件的成立情况.已知
为全集且元素个数有限,对于
的任意一个子集
,定义集合
的指示函数
若
,则( )
注:
表示
中所有元素
所对应的函数值
之和(其中
是
定义域的子集).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52b4f24969673c863b5aff4fb6751ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52b4f24969673c863b5aff4fb6751ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c37959331f824e0153871d62a13cb30e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c85325300b6ce106910cc9e758b56e6b.png)
注:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2059b60ca47a69612f16e1a3f63d8cf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
2024-04-18更新
|
1180次组卷
|
3卷引用:福建省安溪第八中学2024届高三下学期5月份质量检测数学试题
名校
2 . 泊松分布是统计学中常见的离散型概率分布,由法国数学家泊松首次提出.泊松分布的概率分布列为
,其中
为自然对数的底数,
是泊松分布的均值.切尔诺夫界,也称为切尔诺夫不等式,是一类概率不等式,对于某些随机变量
,它可以用于估计概率值
和
的上界.已知服从参数为
的泊松分布的随机变量
的切尔诺夫界为:
对一切
恒成立,
对一切
恒成立.若
服从参数为
的泊松分布,则下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93fc486adcf4d99ffd59331a3c07a7c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065b5d2e6f33ac1e4038f89582377e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68934d2e22b8e4a95dfb8e8009ecf897.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a900fba45727de66ed03aac8984473eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c9b796b6c7e7d4e41e68bd12786e2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aeae227ddcd963101c96448b12a69d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8b9ad2fcfff3dd546c5fdbedfe6238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次