Q17Multiple correct3 Marks25 Feb 2024

Select all true statements.

A

$\begin{bmatrix}1&0&0&0\\0&0&1&2\\0&0&0&0\end{bmatrix}$ is in reduced row echelon form.

B

The reduced row echelon form of any square, invertible matrix is the identity matrix of the same order.

C

Elementary row operations can be performed only on square matrices.

D

If a matrix is in reduced row echelon form, its last row will always be a zero row.