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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.
Adding or Subtracting 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

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