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用非光滑牛顿算法求解绝对值方程 用非光滑牛顿法计算f=Ax-|x|-b的零点； f_是f的光滑函数； by wax； 终止条件为 ||f(xk)||<1e-6 -Non-smooth Newton algorithm for solving the absolute value equation with non-smooth Newton method f = Ax-| x |-b zero f_ is a smooth function of f by w