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

/* code_begins */

{{{

a=matrix([[5,0,0,0],[0,5,0,0],[0,0,5,0],[0,0,0,5]])
b=matrix([[1,1,1,1],[1,1,1,1],[1,1,1,1],[1,1,1,1]])
b
a
a-b
c = (a-b)**-1
c #a=2/5,b=1/5;
}}}

/* code_ends */

 * '''Solution by''': 
   * <prasad>, <student>, <Organization>
   * <Your Name>, <Profession>, <Organization>