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

/* code_begins */

{{{
k=var('k')
a=matrix([[k,1],[4,k]])
print a
a.det()
solve(a.det(),k)
a.pivots()
a=matrix([[1,1],[4,2]])
print a
a.swap_rows(1,0)
print a
a.pivots()
}}}

/* code_ends */

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