Complex Oscillation of Solutions and Their Derivatives of Non-homogenous Linear Differential Equations in the Unit Disc

In this paper, we study the complex oscillation of solutions and their derivatives of the differential equation F’’+ A(z)f’+ B (z)f = F (z), where A(z),B (z) and F (z) are meromorphic functions of finite iterated p-order in the unit disc = {z : |z| < 1}.