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15-4 Matrices
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.
To transmit a
matrix
You can send matrices between calculators just as you
can send aplets, programs, lists, and notes.
1. Align the HP 39gs calculators’ infrared ports (or
connect the calculators using an appropriate cable).
2. Open the Matrix catalogs on both calculators.
3. Highlight the matrix to send.
4. Press and choose the method of sending
(infrared or cable).
5. Press on the receiving calculator and choose
the method of receiving (infrared or cable).
For more information on sending and receiving files, see
“Sending and receiving aplets” on page 19-4.
Working with matrices
To edit a matrix In the Matrix catalog, highlight the name of the matrix
you want to edit and press .
Matrix edit keys The following table lists the matrix edit key operations.
Key Meaning
Copies the highlighted element to
the edit line.
Inserts a row of zeros above, or a
column of zeros to the left, of the
highlighted cell. (You are prompted
to choose row or column.)
A three-way toggle for cursor
advancement in the Matrix editor.
advances to the right, ¸
advances downward, and
does not advance at all.
Switches between larger and
smaller font sizes.
HP 39gs English.book Page 4 Wednesday, December 7, 2005 11:24 PM