摘要
本文首先把二维非线性自治微分方程组的右函数在奇点展开 ,进而求出非线性微分方程组的线性近似方程 。
This paper first gives the expansion of the right function of two dimentional nonlinear autonomous system, finally gives the decision method of type of the singuler point of two dimensional nonlinear autnomous system according to the characteristic value of the linear system.
