HP 39g+ - Manual (Page 175)

Matrices 12-3
To create a matrix
in the matrix
catalog 1. Press
>6+,)7@
MATRIX to open the Matrix catalog. The
Matrix catalog lists the 10 available matrix variables, M0
to M9.
2. Highlight the matrix variable name you want to use and
press I@X• .
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
>(17(5@. (The expression may not
contain symbolic variable names.)
For complex numbers, enter each number in complex
form; that is, (a, b), 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
BP• . The BP• menu key toggles between the
following three options:
– BP•Ç• specifies that the cursor moves to the cell
below the current cell when you press
>(17(5@.
– BP5• specifies that the cursor moves to the cell to the
right of the current cell when you press >(17(5@.
– BP• specifies that the cursor stays in the current cell
when you press
>(17(5@.
6. When done, press
>6+,)7@
MATRIX to see the Matrix
catalog, or press >+20(@ to return to HOME. The matrix
entries are automatically stored.
A matrix is listed with two dimensions, even if it is 3×1. A
vector is listed with the number of elements, such as 3.