用坐标轮换法求解目标函数，迭代时采用最优步长。-With coordinate rotation method to solve the objective function, the optimal iteration step.

ART中的一个function函数,用于雷登变换，配合着其他的函数，可以迭代。-ART function in a function for Leyden transformation, combined with other functions, can be iterated.