The output that Fmincon gives to me are correct absolutely，but when I check the iterations， at the latest iteration ,Fval=3.742029e-12,which is not the optimal function value:x=(1,1),fun=0,the Fval should be 0 instead of 3.742029e-12. How Fincon gets the optimal solution x=(1,1)
here are my codes:
lb=[-5,-5];
ub=[5,5];
fun = @(x)100*(x(2)-x(1)^2)^2 + (1-x(1))^2;
A = [];
b = [];
Aeq = [];
beq = [];
x0 = [0.0,0.0];
nonlcon = [];
options = optimoptions('fmincon','Display','iter','Algorithm','sqp');
x= fmincon(fun,x0,A,b,Aeq,beq,lb,ub,nonlcon,options)
