Texas Instruments TI-89 Manual page 10

TI 89-10
1.1.6 EVALUATI NG OUTPUTS USI NG THE TABLE Function outputs can be determined by
evaluating on the graphics screen, as discussed in Section 1.1.3, or by evaluating on the home
screen as discussed in Section 1.1.5 of this Guide. You can also evaluate functions using the
TI-89 . When you use the table, you can either enter specific input values and find the
TABLE
outputs or generate a list of input and output values in which the inputs begin with
∆tbl
differ by .
Let's use the
though you can use any of the function locations, we again choose to use
, clear the function locations, and enter
(Y )
=
Choose
TblSet
beginning with 13 such that the table values differ by 1, enter
in the location,
tblStart
set to , and choose
OFF
that you "choose" a certain setting by having it high-lighted and
pressing
ENTER .
Press
F5 (TABLE)
output values. Notice that you can scroll through the table with
▼ ▲ , ◄
,
the table display. You can see more of the output by highlight-
ing a particular value and viewing the bottom of the screen.
NOTE: If you wish, while in the table, you can change the cell width using the
and option
9 [Format].
columns and as many as 7 columns. All functions that are checked in the
table, so we suggest leaving the width at its default setting.
If you want to evaluate a function at inputs that are not evenly spaced and/or you only need a
few outputs, you should use the
when using , the settings for
ASK
Choose
TblSet
within the table or
Choose in the
ASK
enter the x-values 15, 0, and 20, type
each value, press
the next value, and so forth.
NOTE: Unwanted entries or values in the table can be cleared by highlighting the value in the
column and pressing
1.1.7 FI NDI NG I NPUT VALUES USI NG THE SOLVER Your calculator solves for the input
values of all the equations we use in this course. The expression can, but does not have to, use x
as the input variable. The TI-89 offers several methods of solving for input variables. We first
illustrate using the solve instruction. (Solving using graphical methods will be discussed after
using the solve instruction and the TI-89 numeric solver are explored.) You can refer to an equa-
to evaluate the function v(t) = 3.622(1.093
TABLE
with To generate a list of values
F4 (TblSet).
∆tbl
in the location, have
1
in the
AUTO Indpnt:
) Exit the setup with
, and observe the list of input and
, and/or ► The table values may be rounded in
.
The cell widths can vary between 3 and 12, which result in as few as 2
feature of the table instead of using
ASK
and
tblStart
with from
F2 [Setup]
F4 (TblSet).
location. To
Indpnt:
type
ENTER ▼ ,
or by using
F1 [Tools] 8 [Clear Table]
in location
3.622(1 .093)^
x
13
Graph Table
location. (Remember
ENTER .
∆tbl
do not matter and are dimmed on screen.
to delete all previous entries.
Copyright © Houghton Mifflin Company. All rights reserved.
Chapter 1
and
tblStart
t
) at the input t = 15. Even
. Press
F1
y 1
.
y 1
menu
F1 [Tools]
list display in the
Y=
. Note that
AUTO
x