If MX(t)M_X(t)MX(t) is the moment generating function of XXX, how do you find E[X]E[X]E[X]?
MX′(0)M_X'(0)MX′(0)
MX(1)M_X(1)MX(1)
MX′(1)M_X'(1)MX′(1)
MX′′(0)M_X''(0)MX′′(0)