Question

determinants and matrices, solve using properties of determinants.....​

Answer 1

Answer:

see below

Step-by-step explanation:

given matrix is a skew symmetric hence A' = -A

then |A'|= -|A|...........(1)

property : the determinant does not change if rows & columns of a matrix are interchanged.

therefore...

|A'| = |A|........(2)

from (1) & (2)....

|A| = -|A|

|A| + |A| = 0

2|A| = 0

|A| = 0

hence proved