• Book	Advanced Engineering Mathematics
  Author	Erwin Kreyszig
  Edition	8th Edition

code_begins

A = matrix([[0,9,-12],[-9,0,20],[12,-20,0]])
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:

  • <s.n.v.sainadh, vycet, student>

  • <Your Name>, <Profession>, <Organization>