2 Δ
3 Δ
6 Δ
0
, then UV +XY =
[20]
20
[-20]
-20
If A is a square matrix, then
A + AT is symmetric
AAT is skew - symmetric
AT + A is skew - symmetric
AT A is skew symmetric
Then sum of the products of the elements of any row of a determinant A with the co-factors of the corresponding elements is equal to
1
|A|
1/2 [A]
If A and B are square matrices of the same order such that (A+B) (A-B) = A2 - B2, then (ABA-1)2 is equal to
B2
I
A2B2
A2
skew symmetric matrix
symmetric matrix
diagonal matrix
upper triangular matrix
If ,then x is equal to
6
-6
, then trace of matrix A is
17
25
3
12
If A is an n ×n matrix then l adj A l =
l A l n-1
l A l n-2
l A l n
l A l
and A2 is the identity matrix, then x is equal to
-1
2
