Texas Instruments Titanium TI-89 Manuel
8/10/01 © 2001 Texas Instruments
TI-89 / TI-92 Plus
Calculus Tools
Getting Started
What is the Calculus Tools Application?
Before You Begin
Starting the Calculus Tools Application
Calculus Tools Menus
F1:Tools F4:Seq
F2:Deriv F5:Vector
F3:Integ F6:Advanced
More Information
Calculus Tools Application Functions
TI
TI-89 / TI-92 Plus Calculus Tools Page 2
Important Information
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implied, including but not limited to any implied warranties of
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Texas Instruments shall not be liable for any claim of any kind
whatsoever against the use of these materials by any other
party.
Graphing product applications (Apps) are licensed. See the
terms of thelicense agreementfor this product.
TI-GRAPH LINK is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
TI-89 / TI-92 Plus Calculus Tools Page 3
What is the Calculus Tools Application?
The Calculus Tools application (App) is a Concept software
application for the TI-89 / TI-92 Plus. Concept software
applications are calculator software application prototypes that
demonstrate a new concept area.
The Calculus Tools App extends the built-in power of your
TI-89 / TI-92 Plus by providing more specialized functionality.
Use the Calculus Tools App to investigate applications of
differentiation; compare numerical integration techniques; and
explore sequences, series, vector calculus, Fourier series, and
more.
The Calculus Tools App is based on programs written or
evaluated by CAS (Computer Algebra System) experts and
educators Bernhard Kutzler, Bhuvanesh Bhatt, David R.
Stoutemyer, Josef Böhm, Ray Barton, Ruth Dover, and
Wolfgang Pröpper. We appreciate their contributions and
evaluations.
Additional documentation for many of the Calculus Tools App
features can be found at series.bk-teachware.com. Other
teaching and learning materials written for the TI-89 and
TI-92 Plus are also available at the Web site, including Exploring
Integration with the TI-89/92/92+ by Josef Böhm and Wolfgang
Pröpper.
TI-89 / TI-92 Plus Calculus Tools Page 4
Before You Begin
Concept applications are shared with our customers, educators,
and students before product definition and testing is complete.
These applications may contain software imperfections and/or
incomplete coding areas. They are "alpha" software versions.
TI invites feedback from teachers and students concerning the
functionality and educational value of the Calculus Tools App.
Please send your comments and questions to
Mode settings
The Calculus Tools App requires specific mode settings to run
correctly. If you try to access the application with incorrect mode
settings, this error dialog box will appear:
TI-89 / TI-92 Plus Calculus Tools Page 5
Before starting the Calculus Tools App, set modes to the
required values as follows:
1. From the Home screen, press 3to display the MODE
dialog box.
2. Ensure that the following modes are set as indicated:
Mode
Setting
Graph
FUNCTION
Display Digits
FLOAT or FLOAT # (1 -12)
Angle
RADIAN
Split Screen
FULL
Exact/Approx
AUTO or EXACT
Base
DEC
Language
ENGLISH
3. Press
¸. The Home screen displays.
MEMORY and VAR-LINK screens unavailable
The MEMORY and VAR-LINK screens, accessed by the 2¯
and 2°keys, are unavailable for the Calculus Tools App.
TI-89 dialog boxes
The TI-89 Calculus Tools App dialog boxes default to alpha-lock.
Press jto turn alpha-lock off before entering numbers.
TI-89 / TI-92 Plus Calculus Tools Page 6
Using variables from the Main folder
Using variables from the Main folder places those stored values
in the Calculus Tools App functions. The Calculus Tools App,
however, clears the following types of variables for specified
functions. As a result, the data stored in these variables is lost.
Menu option
Variable defined as …
F2
F3
F4
F5
F6
Independent var
1 and 2;
4-7
4
Dependent var
4
Angle Parameter
7
Index var
1
Coordinate variables
All
Integration variables
5-8
Var n
2 and 3
x
3
All
Viewing answers in split screen
The Calculus Tools App uses a split screen view to display the
numerical and graphical representations of selected solutions.
•For answers that are partially hidden when viewed in a split
screen, press Nto view the answer in full screen.
•For answers that are too long to be viewed in a full screen,
use the Display Answer option.
•You cannot switch back and forth between the split screen
portions.
TI-89 / TI-92 Plus Calculus Tools Page 7
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Access the Calculus Tools App menus using the F1 through F6
function keys. F1 menu options let you change the configuration
of what you see on the screen, such as viewing the complete
answer or data entered as a string, changing split screen
settings, and restoring window defaults.
F2 through F6 menu options let you access calculus operations
and are organized under the broad categories of derivatives,
integrals, sequences, vectors, and advanced functions.
Most F2 through F6 options access a problem-entry dialog box
that includes an example problem to help you get started. Work
through the example problem, or replace it as desired.
Dialog boxes for most F2 through F6 menu options revert to
default values after data is entered. Dialog boxes for the F3
menu options, however, display the values entered last.
This is the problem-entry dialog box for 1:Tangent Line.
TI-89 / TI-92 Plus Calculus Tools Page 8
F1:Tools
F1 1:Display ANSWER
Lets you view an answer that is too long to fit on the screen.
(Answers are displayed as a string.)
Tip
You can also go to the Home screen, type answer, and
press ¸. Scroll to see the complete answer displayed
in Pretty Print.
TI-89 / TI-92 Plus Calculus Tools Page 9
F1 2:Display ENTERED
Lets you view executed commands or functions as a string,
including the Calculus Tools App functions and operations
entered from the problem-entry dialog box.
Tip
To run a Calculus Tools App function from the Home
screen, type entered and press ¸. The last command
(function and instructions) executed appears.
Be sure to remove the quotes from the string before
executing the command.
TI-89 / TI-92 Plus Calculus Tools Page 10
F1 3:Change Split Screen
Lets you choose between left-right (default) and top-bottom
split screens.
The TI-92 Plus lets you change the ratio of the split screen
views.
•1:1 displays the answer and graph views at the same size.
•1:2 displays the answer view at half the size of the graph
view.
•2:1 displays the answer view at twice the size of the graph
view.
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