A1=matrix([[1,0,0],[1,1,1],[0,0,1]])
print A1.inverse()
A2=matrix([[2,-1,0],[-1,2,-1],[0,-1,2]])
print A2.inverse()
A3=matrix([[0,0,1],[0,1,1],[1,1,1]])
print A3.inverse()

Strang-1.6-10-U (last edited 2010-12-18 10:35:29 by PratyushaKarnati)