• 2022-05-28
    ​设二维随机变量(X,Y)的概率密度为f (x,y),[img=44x25]1802f2b2d860f7f.png[/img],[img=39x25]1802f2b2e0c7729.png[/img]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[img=69x27]1802f2b2e8413e8.png[/img]为( ).‎
    A: f X(x)
    B: f Y(y)
    C: [img=49x49]1802f2b2f0bb048.png[/img]
    D: [img=49x49]1802f2b2f8f8703.png[/img]
  • 举一反三