plz help to me, actually I cant find out how to got ans.
the pdf is given as
f(x, y) = 2, if (x,y) є R
there is marginal pdf's of X and Y
E(X) = integral 0 to 1, x2(1-x)dx = 1/3
now can you describe this stepwise
E(X) = mathemetical expectation
becoz I cant analyse it
If the original of this question was in English please post the exact wording.
Originally Posted by yog782004
we need to know where f(x,y)=2
The support cannot be all of R2.
probably some triangle with x<y or y<x
Here I attach one you can find it,
actually it is example of my book and cant analyse these calculation
I'm not sure what you want to know.
The defintion of the mean of X is
You first need to find the density and the support (where it is not zero).
I get somethink from your suggetion, actualy I m not sure in intrigral operation and calculation, thats y i hav this confusion.