tp072.apm


Model tp072
  ! Source version 1

  Parameters
    a11 = 4
    a12 = 2.25
    a13 = 1
    a14 = 0.25
    a21 = 0.16
    a22 = 0.36
    a23 = 0.64
    a24 = 0.64
    b1 = 0.0401
    b2 = 0.010085
  End Parameters

  Variables
    x[1] = 1, >= 0.001, <= 400000
    x[2] = 1, >= 0.001, <= 300000
    x[3] = 1, >= 0.001, <= 200000
    x[4] = 1, >= 0.001, <= 100000
    obj
  End Variables

  Equations
    b1 - a11/x[1] - a12/x[2] - a13/x[3] - a14/x[4] >= 0
    b2 - a21/x[1] - a22/x[2] - a23/x[3] - a24/x[4] >= 0

    obj = 1 + x[1] + x[2] + x[3] + x[4]

    ! best known objective = 727.679357789613
    ! begin of best known solution
    ! x[1] = 193.4074272719463
    ! x[2] = 179.5470760322745
    ! x[3] = 185.0180633581515
    ! x[4] = 168.7067911272406
    ! end of best known solution
  End Equations
End Model

Stephan K.H. Seidl