GNU Octave, version 2.0.17 (i586-pc-linux-gnu).
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002 John W. Eaton.
This is free software with ABSOLUTELY NO WARRANTY.
For details, type `warranty'.

octave> plottingPS
samplesize = 6
A =

  65   1
  68   1
  67   1
  74   1
  71   1
  72   1

c =

  130
  170
  170
  170
  160
  160

u =

   2.4348
  -9.2174

a = 2.4348
b = -9.2174
ans = 146.61
ans = 11.966
octave>