fT(x)(t) = 2e^(-2t) , t ≥ 0
a) °ex (the ° is supposed to be above the e) b) Var[T(x)] c) m(x), median future lifetime d) mx, central death rate at age x
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is this the right track for part a.
°ex = E[T(x)] = ∫ (from 0 to infin) tp1 dt
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