### Video Transcript

Given the matrix π΄, which is equal
to eight, negative three, 11, four, five, negative five, nine, two, negative one,
34, zero, negative seven, what is π subscript two three?

This notation, a lower case π and
then two subscript numbers, is used to denote the position of one of the elements in
the matrix upper case π΄. In general, if we were asked for
the element π subscript ππ, then this would mean the element of matrix π΄ which
is in row π and column π. So, π and then subscript two three
means the element of the matrix upper case π΄, which is in the second row, row two,
and the third column.

Letβs find this element then in our
matrix π΄. Itβs in the second row and itβs in
the third column. We see that the element in this
position is the number nine. So, we can say that the element π
subscript two three of the matrix uppercase π΄ is nine. Remember, when weβre talking about
the position of an element in the matrix, or indeed, the order of that matrix, itβs
rows first and columns second.