In this paper, we study an approximatesolutionof the second-order linear ordinary differential equations with variable coefficients.
本文研究了二阶变系数线性常微分方程的一种近似求解方法。
2
The nonlinear motion equationsof the systems are derived and the journal orbits are determined as aPProximatesolutionof those equations.
推导出了系统的非线性运动方程，所求方程的近似周期解即为轴心轨迹。
3
An approximatesolution on ultimate load of a circular plate under radial and lateral loads is derived from equations by subdomain Weighted Residual Method (WRM) and point by point WRM.