var('a,b')
e=matrix([[1,0,0],[a,1,0],[b,0,1]])
print e
var('c')
f=matrix([[1,0,0],[0,1,0],[0,c,1]])
print f
print e*f

Strang-1.4-36-U (last edited 2010-12-17 06:04:38 by satheshchandra)