03915e-33      1.57009245868378e-16

  Column 4

     -1.11022302462516e-16
      1.11022302462516e-16
     -1.23259516440783e-32
                         1


S =

  Columns 1 through 3

           1.4142135623731                         0                         0
                         0          1.41421356237309                         0
                         0                         0      5.55111512312578e-17
                         0                         0                         0

  Column