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| rev | Admin | (Created page with "'''Solution: E''' <math display = "block"> \begin{align*} M(t_1,t_2) = E[e^{t_1W + t_2Z}] = E[e^{t_1(X+Y) + t_2(Y-X)}] &= E[e^{(t_1-t_2)X}e^{(t_1 + t_2)Y}] \\ &=E[e^{(t_1-t_2...") | May 4'23 at 23:11 | +415 |