If 
,
, then prove that Δ + Δ1 = 0.
As |A| = |A|T
If any two rows or columns of the determinant are interchanged, then determinant changes its sign
So, Δ = 0
10
If ,, then prove that Δ + Δ1 = 0.
As |A| = |A|T
If any two rows or columns of the determinant are interchanged, then determinant changes its sign
So, Δ = 0