HP 39g Graphing Calculator - Manual (Page 177)

To create a matrix
in the matrix
catalog
' • ISHlFTlM/i'ffi« to open the Matrix catalog. The
Matrix catalog lists the 10 available matrix variables, MO
to M9.
2. Highlight the matrix variable name you want to use and
press
3. Select the type of matrix to create.
~ For a vector (one-dimensional array), select Real
vector or Complex vector. Certain operations
(+, -, CROSS) do not recognize a one-dimensional
matrix as a vector, so this selection is important.
- For a matrix (two-dimensional array), select Real
matrix or Complex matrix.
4. For each element in the matrix, type a number or an
expression, and press | ENTER] . (The expression may not
contain symbolic variable names.)
For complex numbers, enter each number in complex
form; that is, (a, h), where a is the real part and b is the
imaginary part. You must include the parentheses and the
comma.
5. Use the cursor keys to move to a different row or column.
You can change the direction of the highlight bar by
pressing The ® menu key toggles between the
following three options:
I specifies that the cursor moves to the cell
below the current cell when you press [ITI ter I .
I specifies that the cursor moves to the cell to the
right of the current cell when you press | ENTER |.
specifies that the cursor stays in the current cell
when you press |
enter ].
6 .
When done, press fsHlET|M/trR/X to see the Matrix
catalog, or press | EtOMEl to return to HOME. The matrix
entries are automatically stored.
MS 1 2 3
1 ss 5S
i -S? S3
^^^MSTBiK csTBLns
Ml IKl BEftL HflTRIK OKE
M2 2K3 REftL MilTRIK
M3 IKl BEftL MftTBIK 0KB
M4 IKl BEftL MftTBIK OKE
M5
IKl BEftL MftTBIK OKE T
A matrix is listed with two dimensions, even if it is 3x1. A
vector is listed with the number of elements, such as 3.
Matrices 12-3