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

/* code_begins */

{{{
A=matrix([[1,2,3],[7,3,1],[1,6,2]])
b=vector([20,13,0])
x = A.solve_right(b)
print x
A*x
}}}

/* code_ends */

 * '''Solution by''': 
    *<K.sivalatha>, <student>, <prakasam engg college>
    *<N.Srija>, <student>, <prakasam engg college>
    *<K.Triveni>, <student>, <prakasam engg college>