TI-82 Graphics calculator instructions for matrix operations used in this lesson

Entering Data in Matrices:

1. From the home screen, press [MATRX] and arrow to the right to (EDIT), then press [ENTER].
2. Type 6 then press [ENTER], then 5 then press [ENTER].
3. Repeat both steps for all five (A-E) matrices.

1. From the home screen, press [MATRX], press the number of the matrix wanted, then press [ENTER].
2. Press a [+] or [-], depending on the wanted operation.
3. Press [MATRX], press the number of the matrix wanted to add or subtract with the first matrix, then press [ENTER].
4. Press [ENTER] to obtain an answer in matrix form