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

/* code_begins */

{{{
var('a,b,c,d')
A=matrix([[a,b],[c,d]])
print A.inverse()
B=matrix([[d,-b],[-c,a]])
print B.inverse()
}}}

/* code_ends */

 * '''Solution by''': 
   * PratyushaKarnati, Student,Shri Vishnu Engineering College For Women