matrices on a TI-83 calculator?

Question

Can anyone help my find out how to do a matrix on my TI-83 plus calc.?

i need help on augmented matrices

Answer 1

2nd function and then matrix
scroll across to edit, highlight A and press enter
set the number of rows, then columns
edit the numbers in the matrix and press enter

if you want a second matrix, go through the process again, highlighting B and editing it to your satisfaction.

to multiply these, go to the matrix menu and select a and then b (or vice versa) from the names screen