• Book	Linear Algebra
  Author	Gilbert Strang
  Edition

code_begins

A = matrix([[1,4],[-4,1]])
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"

code_ends

• Solution by:

  • phanindra,student,nmrec