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

/* code_begins */

{{{


a=matrix([[2,2,-1],[-1,2,2],[2,-1,2]])
print a
b=a.transpose()
a*b              /*      A*A.TRANSPOSE()=9I   IS DISGONAL      */
}}}
/*code_ends */

 * '''Solution by''': 
   Tejaswi,student,prakasam
                        Jyothi,student,prakasam