Question

use characteristics to describe the following matrix

Answer 1

Answer:

$A_{21} = 6$

Step-by-step explanation:

We are given that  

$A = \left [\begin{array}{cccc}10&4&11&12\\6&3&2&8\end{array}\right]$ and we have to find the value of $A_{21}$

Now, the general term $A_{mn}$ denotes the term in the matrix whose position is mth row and nth column.  

So, $A_{21}$ denotes the term in matrix A whose position is 2nd row and 1st column.

Hence, the term is 6.

So, $A_{21} = 6$ (Answer)