Exercise 14.3.3 (1)What is the stochastic differential equation for the process Wn? (2) Show that t

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Exercise 14.3.3 (1)What is the stochastic differential equation for the process Wn?

(2) Show that

 t s

Wn dW = W(t)n+1 −W(s)n+1 n+1

− n 2

 t s

Wn−1 dt.

(Hint: Use Eqs. (13.15) and (13.16) or apply Ito’s lemma.)

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