, then A3 - 4 A2 + 3 A + I =
3 I
I
-I
-2 I
If A and B are square matrices of size n × n such that A2 - B2 = (A-B) (A+B), then which of the following will be always ttrue?
Either A or B is a zero matrix
Either of A or B is an identity matrix
AB = BA
A = B
The inverse of a symmetric matrix is
symmetric
skew symmetric
diagonal matrix
none of these
, then A100 is equal to
2100 A
299A
100 A
299 A
If ,then x is equal to
6
-6
0
If A is a square matrix, A' is its transpose, then 1/2 ( A-A' ) is
a symmetric matrix
skew symmetric matrix
a unit matrix
an elementary matrix
and A2 is the identity matrix, then x is equal to
-1
1
2
If A is a scalar matrix with scalar K = 10 of order 3, then A-1 is______________.
KI
The inverse of is ___________.
Does not exist
, then UV +XY =
[20]
20
[-20]
-20
