机构地区: 广东省湛江教育学院数学系
出 处: 《海南大学学报(自然科学版)》 2009年第3期225-227,共3页
摘 要: 研究了在单位圆内的高阶非齐次线性微分方程.设f是单位圆内高阶非齐次线性微分方程f(k)+Ak-1(z)f(k-1)+…+A0(z)f=F(z)的解,其中系数Aj(z)(j=0,…,k-1)在单位圆内解析,F(z)(不恒为0)也在单位圆内解析,在不同的条件下得到了f的增长级与F(z)的增长级之间的关系. The higher order non-homogeneous differential equation in the unit disc was studied. Let f be the so-lution of non-homogeneous linear differential equation of higher order f^(k)+Ak-1(z)f^(k-1)…Ao(z)f=F(z)the coefficients Aj(z)(j =0,.. ,k-1) and F(z)(not equiv O) were analyzed in the unit disc, the relationshipbetween the growth order off and the growth order of F(z) under different conditions was elucidated.