Enter vector direction along which to
 plot the function. Minimum is in the
 direction 1.0,1.0,1.0 - Enter X,Y,Z:
  Enter x1,x2 (= to stop)
  5.650E-01 x----------------------------------------------------------l
            l                                                          l
            lx                                                         x
            l x                                                       xl
            l  xx                                                    x l
            l    x                                                 xx  l
            l     x                                               x    l
            l      x                                             x     l
            l       x                                           x      l
            l        xx                                       xx       l
            l          x                                     x         l
            l           xx                                 xx          l
            l             xx                             xx            l
            l               xx                         xx              l
            l                 xx                     xx                l
            l                   xxxx             xxxx                  l
            l                       xxxxxxxxxxxxx                      l
            l                                                          l
            l                                                          l
            l                                                          l
  0.000E+00 ------------------------------------------------------------
             6.000E-01                                         1.500E+00
  Enter x1,x2 (= to stop)