, then trace of matrix A is
17
25
3
12
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
0
|A|
1/2 [A]
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
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
The inverse of is ___________.
Does not exist
, then the value of x, y and z are respectively
5,2,2
1, -2,3
0, -3, 3
-11, 8, 3
The inverse of is.
Does not exit
The inverse of a symmetric matrix is
symmetric
skew symmetric
diagonal matrix
none of these
then B is
If A is a scalar matrix with scalar K = 10 of order 3, then A-1 is______________.
KI
