Question

let A be a nonsingular squar matrix of order 3 x 3. Then ladjAl is equal to:
(a) |A|
(b)|A|^2
(c) |A|^3
(d) |A|​

Answer 1

Answer:

|adjA|=|A|^n-1 ( when squre matrix is given).

we use this formula.

2 option is correct.

Here value of n is 3(order of a squre matrix).