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

/* code_begins */

{{{
a=matrix([[1,2,3],[0,4,0],[0,0,5]])
cofr=a.adjoint()
print cofr
cofr=cofr.transpose()
adet=a.det()
c=identity_matrix(3)*adet
x=cofr.transpose()
print "Cofactor matrix"
print x
d=x*a
if c==d:
 print "acT=(det a)I"
else:
 print "acT!=(det a)I"
invA=a.inverse()
print "Inverse matrix"
print invA

}}}

/* code_ends */

 * '''Solution by''': 
    * <K.Kavitha>, <Student>, <SNIST>

    * <B.Lavanya>, <Student>, <SNIST>