我有一個大學的機率數學題 ><!急

if the joint probability density of x and y is given by
f(x,y)=1/4(2x+y) for 0<x<1, o<y<2, 0 elsewhere
find (a) the marginal density of x
(b)the conditional density of y given x=1/4

please steps by steps !
1 個解答 1