Which of the following is a square matrix?
A
A matrix with equal number of rows and columns
B
A matrix with only zeros
C
A matrix with only ones
D
A row matrix
Analysis & Theory
A square matrix has the same number of rows and columns.
A matrix having only one row is called?
A
Column matrix
B
Row matrix
C
Square matrix
D
Diagonal matrix
Analysis & Theory
A matrix with only one row is called a row matrix.
A matrix having only one column is called?
A
Row matrix
B
Column matrix
C
Square matrix
D
Zero matrix
Analysis & Theory
A matrix with only one column is called a column matrix.
Which matrix has all elements zero?
A
Identity matrix
B
Diagonal matrix
C
Zero matrix
D
Scalar matrix
Analysis & Theory
A zero matrix has all its elements as zero.
A diagonal matrix is a square matrix in which
A
All diagonal elements are zero
B
All off-diagonal elements are zero
C
All elements are equal
D
None of the above
Analysis & Theory
In a diagonal matrix, all off-diagonal elements are zero.
A scalar matrix is a diagonal matrix in which
A
All diagonal elements are equal
B
All off-diagonal elements are equal
C
All elements are zero
D
All elements are one
Analysis & Theory
A scalar matrix has all diagonal elements equal and off-diagonal elements zero.
An identity matrix is a square matrix where
A
All diagonal elements are zero
B
All diagonal elements are one and others zero
C
All elements are one
D
None of the above
Analysis & Theory
Identity matrix has ones on the diagonal and zeros elsewhere.
A triangular matrix is one which
A
All elements above or below the diagonal are zero
B
All diagonal elements are zero
C
All elements are one
D
None of the above
Analysis & Theory
Triangular matrices have either upper or lower elements zero.
A symmetric matrix satisfies which condition?
A
A = A^T
B
A = -A
C
Diagonal elements are zero
D
All elements are equal
Analysis & Theory
A symmetric matrix is equal to its transpose.
A skew-symmetric matrix satisfies which condition?
A
A = A^T
B
A = -A^T
C
All elements are zero
D
All elements are one
Analysis & Theory
A skew-symmetric matrix equals negative of its transpose.