变系数方程组dY／dx＝A（x）Y的若干讨论

DISCUSSION ON SEVERAL POINTS IN VARIABLE COEFFICIENT EQUATIONS SET dY/dx=A(x)Y

本文以待定法为基础，讨论并给出了在某些变换下，变系数方程组ｄＹ／ｄｘ＝Ａ（ｘ）Ｙ转化为可求解方程组的充要条件．

In terms of the undetermination method,this article discusses and provides the sufficient and necessary conditions of the transformation from variable coefficient equations set to solvable one with some alterations.