Texas Instruments TI-83 Guide Book

10-10 Matrices
8310MTRX.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:35 PM Printed: 02/19/01 1:36
PM Page 10 of 16
abs( (absolute value,
MATH NUM
menu) returns a matrix
containing the absolute value of each element of
matrix
.
abs(
matrix
)
round( (
MATH NUM
menu) returns a matrix. It rounds every
element in
matrix
to #
decimals
(

9). If
#decimals
is
omitted, the elements are rounded to 10 digits.
round(
matrix
[
,
#decimals
]
)
Use the
L
1
function (
—
) to invert a matrix (^
L
1 is not
valid).
matrix
must be square. The determinant cannot
equal zero.
matrix
L
1
To raise a matrix to a power,
matrix
must be square. You
can use
2
(
¡
),
3
(
MATH
menu), or ^
power
(
›
) for integer
power
between
0 and 255.
matrix
2
matrix
3
matrix
^
power
abs(
round(
M
1
(Inverse)
Powers

Texas Instruments TI-83 Specifications

General

Programming	TI-BASIC
Processor	Zilog Z80, 6 MHz
Weight	7.4 oz (210 g)
Display	96x64 pixels, monochrome LCD
Power Source	4 AAA batteries, 1 CR1616 or CR1620 for backup
Memory	32 KB RAM
Connectivity	2.5mm I/O port for linking with other TI calculators