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 are vectors of dimension n.　Non-existent lower and upper bounds, i.e.

entries of l and u equal to minus o plus infinity, are allowed.

The algorithm is a globally convergent procedure that combines Newton method and an elliptical trust-region　approach. The elliptical trust-region is defined employing a scaling　diagonal matrix D

and the trust-region subproblem is approximately　solved by the dogleg method.　Only strictly feasible iterates are generated.

Various input/output options are provided, and we refer to the code itself for further documentation.