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

/* code_begins */

{{{
A=matrix(QQ,([2,-1,0],[-1,2,-1],[-1,2,-1],[-1,2,0]))
print A
b= vector([0,0,0,5])
c=A.auguent(b.transpose())
print
print c.echelon_form()
c.pivot_rows()}}}

/* code_ends */

 * '''[0, 1, 3''': 
   * <Your Name>, <Profession>, <Organization>
   * <Your Name>, <Profession>, <Organization>