tp059.apm


Model tp059
  ! Source version 1

  Parameters
    c20a = -0.12694   ! from CUTE and PROB.FOR
    c20b =  0         ! from H+S
    c12a = -3.4054e-4 ! from PROB.FOR
    c12b = -3.405e-4  ! from H+S
    c20  = c20a       ! my quite clear decision from data below
    c12  = c12a       ! my quite clear decision from data below
  End Parameters

  Variables
    x[1] = 90, >= 0, <= 75
    x[2] = 10, >= 0, <= 65
    obj
  End Variables

  Equations
    x[1]*x[2] - 700 >= 0
    x[2] - x[1]^2/125 >= 0
    (x[2] - 50)^2 - 5*(x[1] - 55) >= 0

    obj = (-75.196) + 3.8112*x[1] + c20*x[1]^2                     &
        + 0.0020567*x[1]^3 - 1.0345e-5*x[1]^4 + 6.8306*x[2]        &
        - 0.030234*x[1]*x[2] + 1.28134e-3*x[2]*x[1]^2              &
        + 2.266e-7*x[1]^4*x[2] - 0.25645*x[2]^2 + 0.0034604*x[2]^3 &
        - 1.3514e-5*x[2]^4 + 28.106/(x[2] + 1)                     &
        + 5.2375e-6*x[1]^2*x[2]^2 + 6.3e-8*x[1]^3*x[2]^2           &
        - 7e-10*x[1]^3*x[2]^3 + c12*x[1]*x[2]^2                    &
        + 1.6638e-6*x[1]*x[2]^3 + 2.8673*exp(0.0005*x[1]*x[2])     &
        - 3.5256e-5*x[1]^3*x[2]

    ! best known objective = -7.804235953664777
    ! begin of best known solution
    ! x[1] = 13.55008884043414
    ! x[2] = 51.6601778957467
    ! end of best known solution

    ! c20 = c20a, c12 = c12a ! best known objective = -7.804235953664777
    ! c20 = c20a, c12 = c12a ! begin of best known solution
    ! c20 = c20a, c12 = c12a ! x[1] = 13.55008884043414
    ! c20 = c20a, c12 = c12a ! x[2] = 51.6601778957467
    ! c20 = c20a, c12 = c12a ! end of best known solution

    ! c20 = c20a, c12 = c12b ! best known objective = -7.802789471538381
    ! c20 = c20a, c12 = c12b ! begin of best known solution
    ! c20 = c20a, c12 = c12b ! x[1] = 13.55014232375912
    ! c20 = c20a, c12 = c12b ! x[2] = 51.65997398954288
    ! c20 = c20a, c12 = c12b ! end of best known solution

    ! c20 = c20b, c12 = c12a ! best known objective = 13.35512839020782
    ! c20 = c20b, c12 = c12a ! begin of best known solution
    ! c20 = c20b, c12 = c12a ! x[1] = 12.40643637885028
    ! c20 = c20b, c12 = c12a ! x[2] = 56.42232617202764
    ! c20 = c20b, c12 = c12a ! end of best known solution

    ! c20 = c20b, c12 = c12b ! best known objective = 13.35670821326782
    ! c20 = c20b, c12 = c12b ! begin of best known solution
    ! c20 = c20b, c12 = c12b ! x[1] = 12.4064689347364
    ! c20 = c20b, c12 = c12b ! x[2] = 56.42217811387869
    ! c20 = c20b, c12 = c12b ! end of best known solution

  End Equations
End Model

Stephan K.H. Seidl