The imaginary part of is _____.
0
If then _____.
The cofactor of the element '4' in the determinant ____.
4
10
– 10
– 4
The number of solutions of the equations is ____.
0
1
2
Infinite
If and then the value of is ____.
1/3
½
1
2
The system of equations
and has ____.
No solution
Exactly one solution
Infinite solutions
None of the above
In a skew symmetric matrix, the diagonal elements are all ____.
Different from each other
Zero
One
None of the above
If I is a unit matrix, then 3I is ____.
A unit matrix
A triangular matrix
A scalar matrix
None of the above