tp071.apm


Model tp071
  ! Source version 2

  Variables
    x[1] = 1, >= 1, <= 5
    x[2] = 5, >= 1, <= 5
    x[3] = 5, >= 1, <= 5
    x[4] = 1, >= 1, <= 5
    obj
  End Variables

  Equations
    x[1]*x[2]*x[3]*x[4] - 25 >= 0
    x[1]^2 + x[2]^2 + x[3]^2 + x[4]^2 - 40 = 0

    obj = x[1]*x[4]*(x[1] + x[2] + x[3]) + x[3]

    ! best known objective = 17.0140172891563
    ! begin of best known solution
    ! x[1] = 1
    ! x[2] = 4.742999637264417
    ! x[3] = 3.821149984184874
    ! x[4] = 1.379408293172672
    ! end of best known solution
  End Equations
End Model

Stephan K.H. Seidl