||'''Book'''|| Advanced Engineering Mathematics ||
 ||'''Author'''|| Erwin Kreyszig ||
 ||'''Edition'''|| 8th Edition ||

/* code_begins */

{{{
A=array([[2,1],[1,1]])
print(A)
C=det(A)
if C != 0:
    print("invertible")
    

print(C)
B=A.T
print(B)
D=inv(B)
print(D)
D=inv(A)
print(D)
E=D.T
print(E)

}}}

/* code_ends */

 * '''Solution by''': 
   * <Y.Sivakumar reddy>, <Student>, <prakasam engg. coll.>
   * <T.Raghavendra>, <Student>, <prakasam engg. coll.>
   * <B.Raghavendra>, <Student>, <prakasam engg. coll.> 
   * <NVS.Sai krishna>, <Student>, <prakasam engg. coll.>
   *<M.Pavan kumar><student>, <prakasam engg. coll.> 
   *<J.Lakshmi narayana>, <Student>, <prakasam engg. coll.>