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

/* code_begins */

{{{
a=matrix([[1,2,0,2,1],[-1,-2,1,1,0],[1,2,-3,-7,-2]])
a.echelon_form()
}}}

/* code_ends */

 * '''Solution by''': 
   * g.mamatha, praakasam engg college 
   * VVL Amruhavallit, student, prakasam engineering college