Two kinds of machining methods of function equation curve are introduced. 介紹了兩種函數方程曲線加工方法。
In Chapter l,we in-troduces self mappings on an interval, the roots of the functions, functional equations and the embedding flow. 對迭代的研究涉及線段上的自映射，迭代根與迭代函數方程，迭代根與嵌入流等問題。
In the forward step, the eikonal equation was solved by finite-difference method.Raypaths were determined in the minus gradient direction of travel time. 正演採用快速的有限差分求解程函方程的方法求取旅行時，利用旅行時的負梯度方向求取射線路徑。
