Question

Find the rank of the matrix $\left[\begin{array}{ccc}1&0\\0&1\end{array}\right]$

Answer 1

Answer:

Rank of matrix is 2.

Step-by-step explanation:

To find the rank of the matrix,we must eliminate the rows as much as possible,or we can calculate linearly independent rows.

here in the given matrix  

$\left[\begin{array}{ccc}1&0\\0&1\end{array}\right]$

If we try to eliminate one row by elementary row operation,we cannot,because by elementary row operation  we cannot reduce it further.

So,the rank of given matrix is two.