HP 48g Graphing Calculator - Manual (Page 165)

14
and Lni#ar Algeb'Tj
The HP 48 has extensive capabilities for entering and manipulating
arrays. Array objects represent both vectors and matrices. Many
of the operations described in this chapter also apply to vectors.
Wherever this is the case, the more general term array is used instead
of matrix.
14
Creating and Assembling Matrices
You can enter a matrix two ways:
■ MatrixWriter appKcation. A visual method of entering, viewing, and
editing array elements.
m Command line. The basic object-entry method.
To
enter
a
new matrix
using the
MatrixWriter:
1. Press
(f^f matrix )
to display the MatrixWriter screen and menu.
2. For each element in the first row, do one of the following:
m Type the real or complex number and press
fENTER).
You cannot
mix real and complex elements in the same matrix.
■ Compute the element using the command line and press
fENTER).
To compute an element, type in the arguments (press
fSPC)
to
separate arguments) and press the desired function keys.
3. Press to mark the end of the first row (which specifies the
number of columns in the matrix).
4. For each element in the rest of the matrix, either type in a value or
compute it in the command line and then press
(ENTER).
Or, if you
wish, enter numbers into more than one cell at a time by typing
them all into the command line (pressing
(SPC)
to separate each
number), and then pressing
(ENTER)
once to enter them all.
Matrices and Linear Algebra 14-1