Book
Linear Algebra
Author
Gilbert Strang
Edition
A = matrix([[ 1,2,3],[ 0,4,0],[0,0,5]])
print A
print "Is symmetric?", A.is_symmetric()
print "Is skew_symmetric?", A.is_skew_symmetric()
print A.transpose()==A.inverse()
if(A.transpose()==A.inverse()):
print this is orthogonal
else:
print "this is not orthogonal"
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