Texas Instruments TI-80 - Defining the Independent Variable

Tables 6-3
The independent variable for a table is the independent variable in the current
graphing mode (X for FUNC mode and T for PARAM mode). You define the
minimum value and the incremental value for the independent variable on the
TABLE SETUP screen.
To display the
TABLE SETUP
screen, press
2 #
. The
default values are shown below.
TBLMIN
(table minimum) defines the initial value for the
independent variable:
X
(
FUNC
mode) or
T
(
PARAM
mode).
@
TBL
(table step) defines the increment for the independent
variable.
To change
TBLMIN
and
@
TBL
, simply enter the values at the
blinking cursor. To move between
TBLMIN
and
@
TBL
, press
8
and
7
.
You can also store values to
TBLMIN
and
@
TBL
from the
Home screen or a program. The variable names are on the
VARS TABLE...
menu.
To change
TBLMIN
or
@
TBL
from the Home screen or a
program, begin on a blank line.
1. Enter the value for
TBLMIN
or
@
TBL
.
2. Press
§
.
3. Press
L
to display the
VARS
menu.
4. Press
3
to select
TABLE...
.
5. Select the table variable (
TBLMIN
or
@
TBL
). The name of
the variable is copied to the cursor location.
6. Press
¸
to store the value for the table variable.
Defining the Independent Variable
TABLE SETUP
Screen
TBLMIN and
@
TBL
Setting Up a
Table from the
Home Screen or
a Program