Question

a di
is a
2. The matrix A=
1
(a) unit matrix
(b) diagonal matrix
(c) symmetric matrix
(d) skew-symmetric matrix
x+y 2x + 2 4 7
3. If
x-y 2z + w
0 10
then the values of x,y,z
>​

Answer 1

Answer:

option b. diagonal matrix