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Solve the following using the direct definition of the Ito Integral. I(t) = Z t 0 udW(u) = lim n n1 X i=0 n (t
Solve the following using the direct definition of the Ito Integral.
I(t) =
Z
t
0
udW(u) = lim
n
n1
X
i=0
n (t i )(W(t i+1 ) W(t i ))
By using the direct definition, I mean approximate the integrand with
the simple function n (u) evaluated over the partition of [0,t] given by
= {t 0 ,t 1 ,...,t n } and look at the limit. You may use Itos formula to
check your answer, but just using it to solve the integrand will result
in 0 points.
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