设(X,Y)为二元随机变量，F(x,y)是(X,Y)的分布函数，则[img=397x25]180386781274a3f.png[/img]
举一反三
- 设(X,Y)为二元随机变量，F(x,y)是(X,Y)的分布函数，则[img=397x25]18036378cd0fc32.png[/img]
- 设(X,Y)为二元随机变量，F(x,y)是(X,Y)的分布函数，则[img=397x25]1803645e931922f.png[/img]
- 设(X,Y)为二元随机变量，F(x,y)是(X,Y)的分布函数，则[img=397x25]18036e2b325453d.png[/img]
- 设(X,Y)为二元随机变量，F(x,y)是(X,Y)的分布函数，则[img=397x25]180370335ce3f70.png[/img]
- 设(X,Y)为二元随机变量，F(x,y)是(X,Y)的分布函数，则[img=397x25]1803935d7e61857.png[/img]