Question

In a 3x3 matrix named A, what would A sub 23 mean?

Answer 1

The element of A located in the 2nd row, 3rd column

Answer 2

Shouldn't there be commas between the 2 and 3, or is it always written that way?

Answer 3

They are normally written without commas

Answer 4

Thanks for the help.

Answer 5

You're welcome