Thus a problem of solving the output correlation function of nonlinear system is turned into a problem of solving an ordinary differential equation.
将求非线性系统输出相关函数的问题，变成解常微分方程的问题。
In this paper a two-point boundary value problem for a system of singularly perturbed ordinary differential problems is considered. It is the most complicated problem in singularly perturbed equation.
讨论奇摄动常微分方程系统的二点边界值问题，这是奇摄动问题中较难的部分。
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