Dear Friends,

I have this there discrete stochastic vector

where

My question I know that

But does also do this??

If yes this doen't this prove that

and

are the probability functions P_x and P_y for X and Y respectively??

Sincerely Yours and God bless You all

Billy

p.s. Is latex broken here? I heard that one had to use , but if I do that I get a post then build arrays error! Therefore I use . Hope thats allright.