Question: Let Wt be a Wiener process and t denote the time. Are the following stochastic processes martingales? (a) Xt = 2Wt + t (b) Xt

Let Wt be a Wiener process and t denote the time. Are the following stochastic processes martingales?
(a) Xt = 2Wt + t
(b) Xt = W2t
(c) Xt = W2t− 2 ∫t0 sWsds

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a If Xt 2Wt t then EX ts I t E2W ts t ST t 172 2W t t s 173 2W t t 174 b X t W 2 t t... View full answer

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