HP 39g Graphing Calculator - Manual (Page 179)

To display a
matrix
To display one
element
To create a matrix
in HOME
In the Matrix catalog (j SHiFT|MAr/;/x), highlight the
matrix name and press [MH,
In HOME, enter the name of the matrix variable and
press I ENTER I .
In HOME, enter matrLxname(row,column). For example, if
M2 is [[3,4],[5,
6]], then M2(l,2) | enter ] returns 4.
1
.
2 .
Enter the matrix in the edit line. Start and end the matrix
and each row with square brackets (the shifted [|] and
[jO keys).
Separate each element and each row with a comma.
Example: [[1,2],[3,4]].
3. Press IENTE^ to enter and display the matrix.
The left screen below shows the matrix [[2.5,729],[16,2]]
being stored into M5. The screen on the right shows the vector
[66,33,11] being stored into M
6
. Note that you can enter an
expression (like 5/2) for an element of the matrix, and it will
be evaluated.
, H33;, FUNCTION iM'-'"- FUNCTION
[[5/2,S-'ei, [16,233frM5 [66,33, 11 3^t16
[[2.5,7293,[16,233 [66,33,113
To store one in home , enter:
element value Bffl3 matrlxname{row,column)
For example, to change the element in the first row and second
column of M5 to 728, then display the resulting matrix:
728 M
I ALPHA|M5|T|l|7|2r)1
lENTERlfAlPHAlMS
ENTER
i0a3»,4^', FUNCTIONS
728^M5a,2>
M5
728
[[2.5,7283,[16,233
An attempt to store an element to a row or column beyond the
size of the matrix results in an error message.
Matrices 12-5