Question

If A is a square matrix such that |A|=5 write the value of |AAT|​

Answer 1

Explanation:

Solution :

|AT|=5|AT|=5

(A=AT)(A=AT)

∴|AAT|=5×5∴|AAT|=5×5

=25

Answer 2

Answer:

Solution :

|AT|=5

(A=AT)

∴|AAT|=5×5

=25