you're saying that X and Y are st normals
However the constant is square root of 2 pi.
not 2 pi squared.
Then is a chi-square with one degree of freedom
and so is and their sum by independence is a chi-square with two degrees of freedom
Let x and y be identically distributed variables have density function
find the density function of z=x^2+y^2
i have an answer given as for
but I cannot seem to get that answer, thanks in advance
you're saying that X and Y are st normals
However the constant is square root of 2 pi.
not 2 pi squared.
Then is a chi-square with one degree of freedom
and so is and their sum by independence is a chi-square with two degrees of freedom