{{{A=matrix(QQ,([2,1,0],[1,2,1],[1,2,1],[0,0,2])) print A b=vector([0,0,0,5]) c=A.augment(b.transpose()) print print c.echelon_form() c.pivot_rows() }}}

[0, 1, 3]

[0, 1, 3]

:

Strang-1.3-22-U (last edited 2010-12-17 09:43:01 by jyothi)