||'''Book'''|| Advanced Engineering Mathematics ||
 ||'''Author'''|| Erwin Kreyszig ||
 ||'''Edition'''|| 8th Edition ||

A=matrix([[-1,1,2],[3,-1,1],[-1,3,4]])
B=vector([2,6,4])
x=A.solve_right(B)
print x


 * '''Solution by''': 
  P Siva Jyoshna , Student , IIIT-Hyderabad