mavanhung123dhtn mavanhung123dhtn

31-03-2024
Mathematics

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Cho đại lượng ngẫu nhiên có hàm mật độ xác suất là f(x)= 0&khi x in(-x;2) cup(4;+x)\\ A(x-2)(4-x)khi 2<= x<=4 Tim bTính E(X) , D(X)
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