||'''Book'''|| Linear Algebra ||
 ||'''Author'''|| Gilbert Strang ||
 ||'''Edition'''||  ||

/* code_begins */

{{{
R=matrix( [[1,-0.25,-0.25,0],[-0.25,1,0,-0.25],[-0.25,0,1,-0.25],[0,-0.25,-0.25,1] ])
print R
p=vector( [50,50,25,25])
x=R.solve_right(p)
print x
}}}

/* code_ends */

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