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## Main Question or Discussion Point

fx,y = 6(x-y)dydx, if 0<y<x<1

how do you find E(XY),

i know the formula...g(x,y)fxy(x,y)dydx

but i dont know what 'g(x,y)' represents and the limits to use??

how do you find E(XY),

i know the formula...g(x,y)fxy(x,y)dydx

but i dont know what 'g(x,y)' represents and the limits to use??