MATLAB: Feasibility always zero? what does it mean? thx

Question

I use fmincon to do the optimization:

 End diagnostic information
                                            First-order      Norm of
 Iter F-count            f(x)  Feasibility   optimality         step
    0       5    4.405383e-01    0.000e+00    7.795e-01
    1      10    6.294627e-02    0.000e+00    1.920e-01    1.258e+00
    2      15    2.902131e+02    0.000e+00    2.095e+01    8.519e+01
    3      20    2.590246e+02    0.000e+00    1.978e+01    5.210e+01
    4      25    4.631491e+02    0.000e+00    2.644e+01    2.449e+02
    5      30    4.482603e+01    0.000e+00    8.201e+00    3.028e+02

But feasibility always zeros, what does it mean? many thanks

Answer 1

But feasibility always zeros,

They are zero only to the 3 decimal places displayed on the screen.