If A is an invertible matrix and A-1 = then A=?

y property of inverse

(A-1)-1 = A


(A-1)-1 =-1


A =-1 ------------ 1


-1 = 3 x 6 – 4 x 5


-2


C11 = 6 C12 = -5


C21= -4 C22 = 3


Cofactor matrix A =


Adj A =


-1 =


=


Putting in 1


A =

1