is a scalar matrix, then λ =
0
1
1/3
3
The matrix obtained from a given matrix A by interchanging its rows and columns is called ________ .
Inverse of A
Square of A
Transpose of A
None of these
A matrix in which each element is zero is called a ________ matrix.
Unit matrix
Null matrix
Square matrix
None of these.
A matrix having only one row is called a ________ matrix.
rectangular
square
column
row
A matrix having only one column is called a _______ matrix.
Which one of the following is a 2 × 2 matrix?
If matrix AB = 0, then
A =0 or B = 0
A = 0 and B =0
It is not necessary that A = 0 or B = 0
If a matrix is equal to its transpose then it is called a ____________ matrix.
Conjugate
Symmetric
Null
Zero
Which one of the following is an identity matrix?
