摘要
考察自由项为cose^x或sine^x的n阶常系数非齐线性方程，给出了求其特解的两种简单有效的方法：（1）Lagrange参数变易法和函数矩阵的初等行变换相结合的方法；（2）特榜公式．
Method associating Lagrange's method of variation of parameters with elementaryrow operation and the formular of particular solution are given to obtain a particular integral of P(D)y = cosex (or sinex )where P(D)is a Linear differential operator.
出处
《益阳师专学报》
1999年第5期9-15,共7页
Journal of Yiyang Teachers College
关键词
基本解组
特解
非齐线性方程
常微分方程
自由项
Lagrange's method of variation of parameters
system of fundamental solutions
elementary row operation
linear differentional operator
particular integral
