#.14
a = matrix(QQ,[3,0,4])
b = matrix(QQ,[-1,8,2])
c = matrix(QQ,3,[9,5,7])
d = matrix(QQ,3,[2,-2,6])
# b+c
print "undefined since order of b is not equal to order of c"
print c-transpose(a)
# c+transpose(c)
print "undefined since order of c is not equal to order of transpose of c"

SageDays/Kreyszig-6.1-14 (last edited 2010-08-11 12:35:17 by Grishalda)