Let X and Y have joint CDF Fxy(x,y) = (1/16)xy(x+y) for 0<= x <= 1/2 and 0 <= y <= 2.    Determine the value of this joint CDF on regions A through F.  A=(-1,2) B=(1,3) C=(3,3) D=(3,1) E=(-1,-1) F=(2,-1)

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