3I
5I
-5I
-3I
6
9
7
-9
The type of the matrix is
a scalar matrix
a diagonal matrix
a unit matrix
diagonal and scalar
A 3 × 2 matrix whose elements are aij = i - 2j, is
A
2A
I
0
1
-1
2
-2
The value of is
xyz
x + y + z
0, 1
1, 2
0, -1
-1, -2
-3,0
0,7,3
7,0,3
1,2,7
1,3,7
