Abstract:
The formula is found for integral representation of solutions of the system
\[
\begin{aligned}
\frac{\partial u}{\partial x}+\frac{\partial u^*}{\partial t}&=au+a^*u^*+f,
\frac{\partial u}{\partial t}+\frac{\partial u^*}{\partial x}&=bu+b^*u^*+f^*.
\end{aligned}
\tag{1}
\]
This integral representation permits to establish structural properties of the solutions of the system (1).