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

/* code_begins */

{{{
A=matrix([[0,2,1,0],[2,2,0,1]])
A.swap_rows(1,0)
print A
print A.inverse()
}}}

/* code_ends */

 * '''Solution by''': 
   * PratyushaKarnati, student,svecw