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试位法求解一元方程以及二次插值法求一元函数极小都属于不必求微商的直接法,但存在收敛困难的问题。作者在自给场迭代促收敛中的一维寻查、用状态方程求体积、复相反应动力学数据处理等实际问题中已多次遇到这类困难并进行了加速收敛的研究。
The trial-bit method to solve the unary equation and the quadratic interpolation method to find the minimal function are all direct methods that do not need the derivative, but there is a problem of convergence. The authors have encountered many difficulties such as one-dimensional search in self-imposed field convergence and convergence, the use of equation of state for volume, complex phase reaction kinetics data processing and other practical problems, and have carried out accelerated convergence research.