Find solution of stochastic differential equations

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I need to solve this system of stochastic differential equations:
$$\begin{cases} dX_1(t)=dt+dW_1(t), \\[2ex] dX_2(t)=X_1(t)dW_2(t), \end{cases}$$ where $W_1(t), W_2(t)$ are independent Wiener processes.
From the first equation I found: $$X_1(t) = t + W_1(t)$$ Then, I substituted $X_1(t)$ in the second equation: $$dX_2(t)=(t+W_1(t))dW_2(t)=tdW_2+W_1(t)dW_2(t)$$ And I'm stuck on this step. I will be grateful for any help.