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

/* code_begins */

{{{
R1=matrix([[2,1,1],[1,2,1],[1,1,2]])
print R1
p1=vector([4,4,4])
x1=R1.solve_right(p1)
print x1}}}

/* code_ends */

 * '''Solution by''': 
   * <C.Pratyusha>, <student>, <snist>
   * <Reepu Kumari>, <student>, <snist>
   * <Y.Renuka>,<student>,<snist>