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

/* code_begins */

{{{
var('x,y,z')
A=matrix([[1,-4,-1],[1,1,0],[2,1,3]])
C=matrix([[1],[0],[0]])
r=A.det()
C=matrix([[1,-4,-1],[1,1,0],[1,0,0]])
q=C.det()
x=q/r
x
B=matrix([[1,-4,-1],[1,0,0],[2,1,3]])
t=B.det()
y=t/r
y
F=matrix([[1,0,0],[1,1,0],[2,1,3]])
e=F.det()
z=e/r
z
}}}

/* code_ends */

 * '''Solution by''': 
   *<deepthi>, <student>, <SNIST>
   * <manisha>, <student>, <SNIST>