Book
Linear Algebra
Author
Gilbert Strang
Edition
var('a,b,c')
E=matrix([[1,0,0],[a,1,0],[b,0,1]])
F=matrix([[1,0,0],[0,1,0],[1,c,1]])
EF=E*F
FE=F*E
EE=E*E
print "EF:\n\n",EF
print "FE:\n\n",FE
print "EE:\n\n",EE
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