机译:关于任意初始条件的恒定强迫 (un) 阻尼亥姆霍兹方程的近似解
Univ Nacl Colombia, Dept Math, Dept Math & Stat, FIZMAKO Res Grp, Nubia Campus, Manizales, Colombia;
Univ Dist Francisco Jose de Caldas, Grp FIZMAKO, Bogota, Colombia;
Taif Univ, Dept Math & Stat, Coll Sci, POB 11099, At Taif 21944, Saudi Arabia;