Texas-instruments TI-85 Manuel d'utilisateur télécharger pdf (Page 19)

Chapter 1 B-19

After setting the proper horizontal view, you can now

use ZFIT to draw a graph of the piecewise function.

You can find function values by evaluating outputs on

the home screen or using the table.

& 1.4 Linear Functions and Models

Actual real-world data is used throughout Calculus Concepts. It is necessary that you use

your calculator to find a curve that models the data. Be very careful when you enter the

data in your calculator because your model and all of your results depend on the values that

you enter!

1.4.1 ENTERING DATA There are several ways to input data in your calculator. Two of

these, entering data from the home screen and entering data using the list editor, are

discussed below. If you do not see the list names L1 and L2 return to the statistical setup

instructions at the beginning of this Guide.

We will explore data entry with the following data:

Year 1992 1993 1994 1995 1996 1997

Tax 2541 3081 3615 4157 4703 5242

To enter data from the home screen,

Return to the home screen with 2nd EXIT (QUIT) .

Press 2nd – (LIST) , press F1 ({) to begin the list,

type in each of the x-data values separated

by commas, and end the list with F2 (}) .

Store this list to the name with L1 with STO L

ALPHA 1 ENTER .

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 28 29

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Texas-instruments TI-85 Manuel d'utilisateur Page 19