MATLAB: Optimization : linprog function problem !!!

errorlagrangelambaresiduals

Hello!!! I'm writing a program to optimize an object function :
clc
f = [750 600 1400 1000 0 0 0 0 0 0]; % Object function
Aeq = [0 0 0 0 -1 0 0 -5 5 0; 0 0 0 0 0 -1 0 0 -10 10; 0 0 0 0 0 0 -1 -5 0 5 ; -1 -1 0 0 0 0 0 -10 5 5; 0 0 -1 0 0 0 0 5 -15 10; 0 0 0 -1 0 0 0 5 10 -15];
beq = [0;0;0;0.5;0.6;3];
LB = [0 0 0 0 -1.26 -1.30 -2.50 -pi -pi -pi];
UB = [1.40 2.85 .90 .85 1.26 1.30 2.50 pi pi pi];
[X,FVAL,EXITFLAG,OUTPUT,LAMBDA]=linprog(f,[],[],Aeq,beq,LB,UB)
THE RESULT I RECEIVE IS : 
Exiting: One or more of the residuals, duality gap, or total relative error
has stalled:
       the primal appears to be infeasible (and the dual unbounded).
       (The dual residual < TolFun=1.00e-008.)
X =
    0.1856
    0.0017
    0.0717
    0.0000
    0.5254
   -0.6682
    0.0678
    1.1334
    1.0669
    0.9517
FVAL =
240.5804
EXITFLAG =
    -2
OUTPUT =
      iterations: 7
       algorithm: 'large-scale: interior point'
    cgiterations: 0
         message: [1x209 char]
LAMBDA =
    ineqlin: [0x1 double]
      eqlin: [6x1 double]
      upper: [10x1 double]
      lower: [10x1 double]
It's not my hope, What is the error ??? and please tell me the solution for it.
Thank you very much

Best Answer

Seems your constraints are such that your problem does not have a feasible point.
Best wishes
Torsten.
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