Number of iterations:  38

 Vertices of final 3-D simplex and
 function values at the vertices:

   I      X(I)        Y(I)        Z(I)      FUNCTION

   1    0.484406    0.600519    0.693773   -0.400000
   2    0.471845    0.602220    0.717579   -0.400000
   3    0.515906    0.603889    0.712515   -0.400000
   4    0.501482    0.633435    0.705134   -0.400000

 True minimum is at (0.5,0.6,0.7)