Question

If A = a a ОО
10
Co o a
ООО
Then det (adj A) -
o ar I d) a ²
22
b) aq
solution:-
SI​

Answer 1

Answer:

frist follow me and mark me as brianlist

Step-by-step explanation:

Consider the following identity A(adjA)=∣A∣I. Thus comparing it with the above equation gives us ∣A∣=10

Now ∣adjA∣=∣A∣  

n−1

 where n is the order of the square matrix.

Here 'n' is 3, therefore, ∣adjA∣=∣A∣  

3−1

=∣A∣  

2

=10  

2

=100