该程序是用于求解信赖域子问题的Powell dogleg方法-This routine solves the trust region subproblem by Powell s dogleg method.

给出变量的上下边界、初值和代价函数，能够搜索代价函数最小值时的变量取值。属于带约束的优化算法，可以用来求算非线性方程组。-STRSCNE is a Matlab code for constrained nonlinear systems of equations F(x)=0 l<=x<=u where F: R^n--> R^n, l and u a