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

/* code_begins */

{{{
var('k')
a=matrix([[1-k,2-k,1+k],[2-2*k,-2-k,2-3*k],[3-k,1+k,-1-k]])
solve(a.det(),k)
}}}

/* code_ends */

 * '''Solution by''': 
   *manisha,student,snist
    deepthi,student,snist