Answer:
[tex]A_{21} = 6[/tex]
Step-by-step explanation:
We are given that
[tex]A = \left [\begin{array}{cccc}10&4&11&12\\6&3&2&8\end{array}\right][/tex] and we have to find the value of [tex]A_{21}[/tex]
Now, the general term [tex]A_{mn}[/tex] denotes the term in the matrix whose position is mth row and nth column.
So, [tex]A_{21}[/tex] denotes the term in matrix A whose position is 2nd row and 1st column.
Hence, the term is 6.
So, [tex]A_{21} = 6[/tex] (Answer)
