用模拟退火算法求解线性规划问题。 min f(x)=x1^2+x2^2+8 st. x1^2-x2>=0 -x1-x2^2+2=0 x1,x2>=0(The simulated annealing algorithm is used to solve the linear programming problem. min f(x)=x1^2+x2^2+8 st. x1^2-x2>