Question

Given a square matrix A of order 3x3 such that |Al=12.Find the value of |A adjA|​

Answer 1

Answer:A=n×n matrix

∣adjA∣=∣A∣  

n−1

 

∣AadjA∣=∣A∣∣adjA∣

                 =∣A∣∣A∣  

3−1

 

                 =∣A∣  

3

 

                 =12  

3

 

                 =1728

Step-by-step explanation:

Answer 2

Answer:

Answer

Correct option is

A

1728

A=n×n matrix

∣adjA∣=∣A∣

n−1

∣AadjA∣=∣A∣∣adjA∣

=∣A∣∣A∣

3−1

=∣A∣

3

=12

3

=1728