求解非线性方程组的信赖域方法

Trust region method for sloving nonlinear equations

用信赖域方法求解非线性方程组问题 ,计算中仅使用目标函数及其一阶导数信息 ,通过BFGS校正方法构造 Hessian阵的近似 ,最后给出了相应的数值结果。

Trust region method was used to solve nonlinear equation problems,at the same time, objective function and its once derivation,were used in the computation only through BFGS justification matrix was costructed.Finally some numerical results were given.