首页 > 学历类 > 研究生考试 > 考研 > 考研数学一 > 设随机变量 ( X, Y) 服从二维正态分布,且 X与Y不相关, f ( x) f ( y) X Y 分别表示 X,Y的概率密度, 则在Y=y的条件下, X的条件概率密度f X|Y (X|Y) 为()

设随机变量 ( X, Y) 服从二维正态分布,且 X与Y不相关, f ( x) f ( y) X Y 分别表示 X,Y的概率密度, 则在Y=y的条件下, X的条件概率密度f X|Y (X|Y) 为()

A.[img src="https://img.haodaxue.net/uploadimg/ico/2020/0606/1591425191200111.png" />
B.[img src="https://img.haodaxue.net/uploadimg/ico/2020/0606/1591425197230163.png" />
C.[img src="https://img.haodaxue.net/uploadimg/ico/2020/0606/1591425201660640.png" />
D.[img src="https://img.haodaxue.net/uploadimg/ico/2020/0606/1591425206360770.png" />
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正确答案: A
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