Let Z(t) denote the standard Brownian process. Show that (a) dZ(t) 2+n = 0, for any positive

Question:

Let Z(t) denote the standard Brownian process. Show that 

(a) dZ(t)2+n = 0, for any positive integer n,

(b)

S to Z(t)" dz(t) = 1 n+1 n - 2 -[Z(t)"+  Z(to)"+] ["z(t)"-1 dt, to

for any positive integer n, 

(c) E[Z4(t)] = 3t2

(d) E[eαZ(t)] = eα2t/2.

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