If A and B are symmetric matrices, then matrix A+B is
Symmetric matrix
skew symmetric matrix
unit matrix
conjugate matrix
, then |AB| =
80
100
-110
92
symmetric matrix
diagonal matrix
upper triangular matrix
If a ≠ b ≠ c, the value of x which satisfies the equation is.
x = 0
x = a
x = b
x = c
, then A3 - 4 A2 + 3 A + I =
3 I
I
-I
-2 I
If A and B are any two matrices that AB = 0 and A is non- singular, then_________________.
B = 0
B is singular
B is non singular
B =A
for x ≠ 0, y ≠ 0, then D is
divisible by neither x nor y
divisible by x but not y
divisible by y but not x
divisible by both x and y
14
None of these
If A is a symmetric matrix and n ∈N, then An is
a diagonal matrix
none of these
and I is the unit matrix of order 2, then A2 equals
4 A - 3 I
3 A - 4 I
A- I
A + I
