Re: [Help-glpk] help plz

[Andrew Makhorin]

> Can someone send me some information about :

> Harris two-pas ratio test

Please see:

P.M.J.Harris (1973), Pivot Selection Methods of the Devex LP Code,
Mathematical Programming 5, 1-28.

R.Fletcher (1994), Steepest Edge, Degeneracy and Conditioning in LP,
15th Intl. Symp. on Math. Prog.

> I have a problem

> when i enter this matrix ,


> max x1 + x2 + x3

1 0.5   1   > 0
1 1      1   > 0.9
1 0.5   1   >  3
1 3     0  < 2.4
1 1     0    < 3

xi > 0

> GLPK says it is infeasible 
> can someone give some help and ideas for the provenance of the problem

Your instance is unclear. Could you write it in cplex lp format?