求解非线性方程。调用格式x=fmincon（fun，x0,A,b,Aeq,beq,VLB,VUB),For solving nonlinear equations. Call the format x = fmincon (fun, x0, A, b, Aeq, beq, VLB, VUB)

通过使用matlab优化工具箱中的函数fmincon解决有约束的非线性优化问题，有详细的代码过程。-By using the matlab optimization toolbox function fmincon to solve constrained nonlinear optimization problem, has detailed the process code.