A = matrix([[ 2.7,-1.8],[ 0,0.9],[9.0,-4.5]])
print A
A == -(-A)
-A = -matrix([[ 2.7,-1.8],[ 0,0.9],[9.0,-4.5]])

Strang-6.0-7 (last edited 2010-12-17 19:22:18 by sai9876543210abcd)