The random variables X and Y have a joint density fn. Given by f(x,y)=( 2exp(-2x))/x , 0<=x<Infinity , 0<=y<x Compute Cov(X,Y).

Question

The random variables x and y have ajoint density fn

Comments

The function f(x,y) is expressed in terms of x only and it is undefined for x=0 because of the division by x, which is included in the given domain range. Is this intentional? Please clarify and correct as necessary.

Answer 1

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