|
Sometimes, we'll need
to refer to a specific entry, so we have a special "tagging" system.
It's based on rows and columns:
| is the
entry in the |
 |
row
and the |
 |
column. |
For example:
TRY IT:
Find the sizes of
these matrices:
![[ 2 , -5 , 6 , 7 ]](images/01-matrices-21.gif)
![[ row 1: 0 , 8 , 2 , 10 , -5 row 2: -6 , 4 , -3 , 8 , 7 ]](images/01-matrices-22.gif)
![[ row 1: 1 , -4 , 5 row 2: 6 , 7, -8 row 3: 10 , 9 , -2 ]](images/01-matrices-23.gif)
For this matrix, list these
entries:
|
The printing
and distribution and/or downloading of these lessons is strictly
prohibited. |
|
![[ row 1: 5 , 4 row 2: -2 , 11 row 3: 0 , 3 ]](images/01-matrices-13.gif)
![[ row 1: a11 , a12 row 2: a21 , a22 row 3: a31 , a32 ]](images/01-matrices-17.gif)
