HP 38g Graphing Calculator - Manual (Page 131)

6
Using Matrices
Vectors
Matrices
Matrix
Variables
You can do matrix calculations in Home (and in programs).
The matrix and each row of a matrix appear in brackets, and
the elements and rows are separated by commas, such as
[ [ 1 , 2 , 3 ] , [ 4 , 5 , 6 ] ] for
"1 2 3“
4 5 6
(If the Decimal Mark in MODES is set to Comma, then the
separators are periods.)
Vectors are one-dimensional arrays. They are composed of
just one row or one column. In this calculator, a vector is
represented with single brackets; for example, [ 1 , 2 , 3 ] .
Matrices are two-dimensional arrays. They are composed of
more than one row and more than one column. A true, two-
dimensional matrix always is represented with nested
brackets; for example, [ [ 1 , 2 , 3 ] , [ 4 , 5 , 6 ] ] .
There are ten matrix variables available, named Ml through
M9 and MO. You can use them in calculations or
manipulations in Home or in a program. You can fetch the
matrix names from the VAR menu, or just type their names
from the keyboard.
Creating and Storing Matrices
You can create, edit, delete, send, and receive named
matrices in the Matrix catalog (■ [MATRIX]),
You can also create and store matrices-
unnnamed—in Home.
-named or
Using Matrices 6-1