Using a direct method regarding solution of a equation as a polynomial of cosine, a kind of nonlinear orbital differential equation of a particle exerted by attractive central force following power law is solved.
用把方程的解设为余弦函数多项式的一种直接方法，求解了受幂律引力作用的质点一类非线性轨道微分方程，从而得出在幂律引力作用下从拱点抛出质点的运动轨道是正弦螺
An algorithm is used for the computations of the corresponding residual polynomial confined in a given region.
通过静态反馈 ,将特征多项式与剩余多项式配置在给定区域。