Texas Instruments TI-83 - Plus Graphing Calculator Manual

8300INTR.DOC TI-83 Intl English, Title Page Bob Fedorisko Revised: 02/19/01 2:32 PM Printed: 02/21/01 9:05
AM Page iii of 8
TI-83
GRAPHING CALCULATOR
GUIDEBOOK
TI-GRAPH LINK, Calculator-Based Laboratory, CBL, CBL 2, Calculator-Based Ranger, CBR,
Constant Memory, Automatic Power Down, APD, and EOS are trademarks of Texas
Instruments Incorporated.
IBM is a registered trademark of International Business Machines Corporation.
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© 1996, 2000, 2001 Texas Instruments Incorporated.

8300INTR.DOC TI-83 Intl English, Title Page Bob Fedorisko Revised: 02/19/01 11:26 AM Printed: 02/19/01 1:46
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Texas Instruments makes no warranty, either expressed or
implied, including but not limited to any implied warranties of
merchantability and fitness for a particular purpose, regarding any
programs or book materials and makes such materials available
solely on an “as-is” basis.
In no event shall Texas Instruments be liable to anyone for special,
collateral, incidental, or consequential damages in connection with
or arising out of the purchase or use of these materials, and the
sole and exclusive liability of Texas Instruments, regardless of the
form of action, shall not exceed the purchase price of this
equipment. Moreover, Texas Instruments shall not be liable for any
claim of any kind whatsoever against the use of these materials by
any other party.
This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15 of the FCC
rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions,
may cause harmful interference with radio communications.
However, there is no guarantee that interference will not occur in
a particular installation.
If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the
equipment off and on, you can try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
• Consult the dealer or an experienced radio/television
technician for help.
Caution: Any changes or modifications to this equipment not
expressly approved by Texas Instruments may void your authority
to operate the equipment.
Important
US FCC
Information
Concerning
Radio Frequency
Interference

Introduction iii
8300INTR.DOC TI-83 Intl English, Title Page Bob Fedorisko Revised: 02/19/01 11:26 AM Printed: 02/19/01 1:46
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This manual describes how to use the TI.83 Graphing Calculator. Getting
Started is an overview of TI.83 features. Chapter 1 describes how the TI.83
operates. Other chapters describe various interactive features. Chapter 17
shows how to combine these features to solve problems.
TI-83 Keyboard .......................................... 2
TI-83 Menus ............................................. 4
First Steps ............................................... 5
Entering a Calculation: The Quadratic Formula .......... 6
Converting to a Fraction: The Quadratic Formula ........ 7
Displaying Complex Results: The Quadratic Formula .... 8
Defining a Function: Box with Lid ....................... 9
Defining a Table of Values: Box with Lid ................. 10
Zooming In on the Table: Box with Lid................... 11
Setting the Viewing Window: Box with Lid ............... 12
Displaying and Tracing the Graph: Box with Lid ......... 13
Zooming In on the Graph: Box with Lid .................. 15
Finding the Calculated Maximum: Box with Lid.......... 16
Other TI-83 Features..................................... 17
Turning On and Turning Off the TI-83.................... 1-2
Setting the Display Contrast ............................. 1-3
The Display .............................................. 1-4
Entering Expressions and Instructions................... 1-6
TI-83 Edit Keys .......................................... 1-8
Setting Modes ........................................... 1-9
Using TI-83 Variable Names ............................. 1-13
Storing Variable Values .................................. 1-14
Recalling Variable Values ................................ 1-15
ENTRY (Last Entry) Storage Area........................ 1-16
Ans (Last Answer) Storage Area ......................... 1-18
TI-83 Menus ............................................. 1-19
VARS and VARS Y.VARS Menus......................... 1-21
Equation Operating System (EOSé)..................... 1-22
Error Conditions......................................... 1-24
Table of Contents
Getting Started:
Do This First!
Chapter 1:
Operating the
TI-83

iv Introduction
8300INTR.DOC TI-83 Intl English, Title Page Bob Fedorisko Revised: 02/19/01 11:26 AM Printed: 02/19/01 1:46
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Getting Started: Coin Flip ................................ 2-2
Keyboard Math Operations .............................. 2-3
MATH Operations ........................................ 2-5
Using the Equation Solver ............................... 2-8
MATH NUM (Number) Operations........................ 2-13
Entering and Using Complex Numbers................... 2-16
MATH CPX (Complex) Operations ....................... 2-18
MATH PRB (Probability) Operations ..................... 2-20
ANGLE Operations....................................... 2-23
TEST (Relational) Operations............................ 2-25
TEST LOGIC (Boolean) Operations ...................... 2-26
Getting Started: Graphing a Circle ....................... 3-2
Defining Graphs ......................................... 3-3
Setting the Graph Modes................................. 3-4
Defining Functions ...................................... 3-5
Selecting and Deselecting Functions ..................... 3-7
Setting Graph Styles for Functions....................... 3-9
Setting the Viewing Window Variables ................... 3-11
Setting the Graph Format ................................ 3-13
Displaying Graphs ....................................... 3-15
Exploring Graphs with the Free-Moving Cursor.......... 3-17
Exploring Graphs with TRACE........................... 3-18
Exploring Graphs with the ZOOM Instructions........... 3-20
Using ZOOM MEMORY .................................. 3-23
Using the CALC (Calculate) Operations .................. 3-25
Getting Started: Path of a Ball ........................... 4-2
Defining and Displaying Parametric Graphs.............. 4-4
Exploring Parametric Graphs ............................ 4-7
Getting Started: Polar Rose .............................. 5-2
Defining and Displaying Polar Graphs ................... 5-3
Exploring Polar Graphs .................................. 5-6
Chapter 2:
Math, Angle, and
Test Operations
Chapter 3:
Function
Graphing
Chapter 4:
Parametric
Graphing
Chapter 5:
Polar Graphing

Introduction v
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Getting Started: Forest and Trees ........................ 6-2
Defining and Displaying Sequence Graphs ............... 6-3
Selecting Axes Combinations ............................ 6-8
Exploring Sequence Graphs.............................. 6-9
Graphing Web Plots...................................... 6-11
Using Web Plots to Illustrate Convergence............... 6-12
Graphing Phase Plots .................................... 6-13
Comparing TI-83 and TI.82 Sequence Variables .......... 6-15
Keystroke Differences Between TI-83 and TI-82 ......... 6-16
Getting Started: Roots of a Function ..................... 7-2
Setting Up the Table ..................................... 7-3
Defining the Dependent Variables........................ 7-4
Displaying the Table ..................................... 7-5
Getting Started: Drawing a Tangent Line ................. 8-2
Using the DRAW Menu................................... 8-3
Clearing Drawings ....................................... 8-4
Drawing Line Segments.................................. 8-5
Drawing Horizontal and Vertical Lines ................... 8-6
Drawing Tangent Lines .................................. 8-8
Drawing Functions and Inverses ......................... 8-9
Shading Areas on a Graph ............................... 8-10
Drawing Circles.......................................... 8-11
Placing Text on a Graph ................................. 8-12
Using Pen to Draw on a Graph ........................... 8-13
Drawing Points on a Graph .............................. 8-14
Drawing Pixels .......................................... 8-16
Storing Graph Pictures (Pic)............................. 8-17
Recalling Graph Pictures (Pic)........................... 8-18
Storing Graph Databases (GDB)......................... 8-19
Recalling Graph Databases (GDB)....................... 8-20
Getting Started: Exploring the Unit Circle................ 9-2
Using Split Screen ....................................... 9-3
Horiz (Horizontal) Split Screen........................... 9-4
G-T(Graph-Table) Split Screen .......................... 9-5
TI.83 Pixels in Horiz and G-TModes ..................... 9-6
Chapter 6:
Sequence
Graphing
Chapter 7:
Tables
Chapter 8:
DRAW
Operations
Chapter 9:
Split Screen

vi Introduction
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Getting Started: Systems of Linear Equations ............ 10-2
Defining a Matrix ........................................ 10-3
Viewing and Editing Matrix Elements .................... 10-4
Using Matrices with Expressions ........................ 10-7
Displaying and Copying Matrices ........................ 10-8
Using Math Functions with Matrices ..................... 10-9
Using the MATRX MATH Operations ..................... 10-12
Getting Started: Generating a Sequence .................. 11-2
Naming Lists............................................. 11-3
Storing and Displaying Lists ............................. 11-4
Entering List Names ..................................... 11-6
Attaching Formulas to List Names ....................... 11-7
Using Lists in Expressions ............................... 11-9
LIST OPS Menu .......................................... 11-10
LIST MATH Menu ........................................ 11-17
Getting Started: Pendulum Lengths and Periods ......... 12-2
Setting up Statistical Analyses ........................... 12-10
Using the Stat List Editor ................................ 12-11
Attaching Formulas to List Names ....................... 12-14
Detaching Formulas from List Names.................... 12-16
Switching Stat List Editor Contexts ...................... 12-17
Stat List Editor Contexts................................. 12-18
STAT EDIT Menu ........................................ 12-20
Regression Model Features .............................. 12-22
STAT CALC Menu........................................ 12-24
Statistical Variables...................................... 12-29
Statistical Analysis in a Program ......................... 12-30
Statistical Plotting ....................................... 12-31
Statistical Plotting in a Program ......................... 12-37
Getting Started: Mean Height of a Population ............ 13-2
Inferential Stat Editors................................... 13-6
STAT TESTS Menu ...................................... 13-9
Inferential Statistics Input Descriptions.................. 13-26
Test and Interval Output Variables ....................... 13-28
Distribution Functions................................... 13-29
Distribution Shading ..................................... 13-35
Chapter 10:
Matrices
Chapter 11:
Lists
Chapter 12:
Statistics
Chapter 13:
Inferential
Statistics and
Distributions

Introduction vii
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Getting Started: Financing a Car ......................... 14-2
Getting Started: Computing Compound Interest.......... 14-3
Using the TVM Solver .................................... 14-4
Using the Financial Functions ........................... 14-5
Calculating Time Value of Money (TVM)................. 14-6
Calculating Cash Flows .................................. 14-8
Calculating Amortization ................................ 14-9
Calculating Interest Conversion.......................... 14-12
Finding Days between Dates/Defining Payment Method ..... 14-13
Using the TVM Variables ................................. 14-14
Browsing the TI-83 CATALOG ........................... 15-2
Entering and Using Strings............................... 15-3
Storing Strings to String Variables ....................... 15-4
String Functions and Instructions in the CATALOG ...... 15-6
Hyperbolic Functions in the CATALOG .................. 15-10
Getting Started: Volume of a Cylinder.................... 16-2
Creating and Deleting Programs ......................... 16-4
Entering Command Lines and Executing Programs ...... 16-5
Editing Programs ........................................ 16-6
Copying and Renaming Programs ........................ 16-7
PRGM CTL (Control) Instructions ....................... 16-8
PRGM I/O (Input/Output) Instructions ................... 16-16
Calling Other Programs as Subroutines .................. 16-22
Comparing Test Results Using Box Plots ................ 17-2
Graphing Piecewise Functions........................... 17-4
Graphing Inequalities .................................... 17-5
Solving a System of Nonlinear Equations ................ 17-6
Using a Program to Create the Sierpinski Triangle ....... 17-7
Graphing Cobweb Attractors ............................ 17-8
Using a Program to Guess the Coefficients............... 17-9
Graphing the Unit Circle and Trigonometric Curves...... 17-10
Finding the Area between Curves ........................ 17-11
Using Parametric Equations: Ferris Wheel Problem...... 17-12
Demonstrating the Fundamental Theorem of Calculus ... 17-14
Computing Areas of Regular N-Sided Polygons .......... 17-16
Computing and Graphing Mortgage Payments ........... 17-18
Chapter 14:
Financial
Functions
Chapter 15:
CATALOG,
Strings,
Hyperbolic
Functions
Chapter 16:
Programming
Chapter 17:
Applications

viii Introduction
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Checking Available Memory ............................. 18-2
Deleting Items from Memory ............................ 18-3
Clearing Entries and List Elements ...................... 18-4
Resetting the TI.83 ...................................... 18-5
Getting Started: Sending Variables ....................... 19-2
TI-83 LINK ............................................... 19-3
Selecting Items to Send .................................. 19-4
Receiving Items.......................................... 19-5
Transmitting Items....................................... 19-6
Transmitting Lists to a TI-82 ............................. 19-8
Transmitting from a TI-82 to a TI-83 ..................... 19-9
Backing Up Memory ..................................... 19-10
Table of Functions and Instructions ..................... A-2
Menu Map ............................................... A-39
Variables ................................................ A-49
Statistical Formulas ..................................... A-50
Financial Formulas ...................................... A-54
Battery Information...................................... B-2
In Case of Difficulty ..................................... B-4
Error Conditions......................................... B-5
Accuracy Information.................................... B-10
Support and Service Information......................... B-12
Warranty Information.................................... B-13
Chapter 18:
Memory
Management
Chapter 19:
Communication
Link
Appendix A:
Tables and
Reference
Information
Appendix B:
General
Information
Index

Getting Started 1
8300GETM.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 11:06 AM Printed: 02/19/01 11:06
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Gettin
g
Started:
Do This First!
TI-83 Keyboard .......................................... 2
TI-83 Menus ............................................. 4
First Steps ............................................... 5
Entering a Calculation: The Quadratic Formula .......... 6
Converting to a Fraction: The Quadratic Formula ........ 7
Displaying Complex Results: The Quadratic Formula .... 8
Defining a Function: Box with Lid ....................... 9
Defining a Table of Values: Box with Lid ................. 10
Zooming In on the Table: Box with Lid................... 11
Setting the Viewing Window: Box with Lid ............... 12
Displaying and Tracing the Graph: Box with Lid ......... 13
Zooming In on the Graph: Box with Lid .................. 15
Finding the Calculated Maximum: Box with Lid.......... 16
Other TI.83 Features..................................... 17
Contents

2 Getting Started
8300GETM.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 11:11 AM Printed: 02/19/01 11:14
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Generally, the keyboard is divided into these zones: graphing keys, editing
keys, advanced function keys, and scientific calculator keys.
Graphing keys access the interactive graphing features.
Editing keys allow you to edit expressions and values.
Advanced function keys display menus that access the
advanced functions.
Scientific calculator keys access the capabilities of a
standard scientific calculator.
TI-83 Keyboard
Keyboard Zones
Editing Keys
Advanced
Function Keys
Scientific
Calculator Keys
Graphing Keys

Getting Started 3
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The keys on the TI.83 are color-coded to help you easily
locate the key you need.
The gray keys are the number keys. The blue keys along the
right side of the keyboard are the common math functions.
The blue keys across the top set up and display graphs.
The primary function of each key is printed in white on the
key. For example, when you press , the MATH menu is
displayed.
The secondary function of each key is printed in yellow
above the key. When you press the yellow ykey, the
character, abbreviation, or word printed in yellow above
the other keys becomes active for the next keystroke. For
example, when you press yand then , the TEST
menu is displayed. This guidebook describes this keystroke
combination as y[TEST].
The alpha function of each key is printed in green above
the key. When you press the green ƒkey, the alpha
character printed in green above the other keys becomes
active for the next keystroke. For example, when you press
ƒand then , the letter Ais entered. This
guidebook describes this keystroke combination as ƒ
[A].
Using the
Color-Coded
Keyboard
Using the y
and ƒKeys
The ykey accesses
the second function
printed in yellow above
each key.
The ƒkey
accesses the alpha
function printed in
green above each key.

4 Getting Started
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Displaying a Menu
While using your TI.83, you often will need
to access items from its menus.
When you press a key that displays a menu,
that menu temporarily replaces the screen
where you are working. For example, when
you press , the MATH menu is displayed
as a full screen.
A
fter you select an item from a menu, the
screen where you are working usually is
displayed again.
Moving from One Menu to Another
Some keys access more than one menu. When
you press such a key, the names of all
accessible menus are displayed on the top
line. When you highlight a menu name, the
items in that menu are displayed. Press ~and
|to highlight each menu name.
Selecting an Item from a Menu
The number or letter next to the current menu
item is highlighted. If the menu continues
beyond the screen, a down arrow ( $)
replaces the colon ( :) in the last displayed
item. If you scroll beyond the last displayed
item, an up arrow ( #) replaces the colon in
the first item displayed.You can select an item
in either of two ways.
¦Press †or }to move the cursor to the
number or letter of the item; press Í.
¦Press the key or key combination for the
number or letter next to the item.
Leaving a Menu without Making a Selection
You can leave a menu without making a
selection in any of three ways.
¦Press ‘to return to the screen
where you were.
¦Press y[QUIT] to return to the home
screen.
¦Press a key for another menu or screen.
TI-83 Menus

Getting Started 5
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Before starting the sample problems in this chapter, follow the steps on this
page to reset the TI.83 to its factory settings and clear all memory. This
ensures that the keystrokes in this chapter will produce the illustrated results.
To reset the TI.83, follow these steps.
1. Press Éto turn on the calculator.
2. Press and release y, and then press
[MEM] (above Ã).
When you press y, you access the
operation printed in yellow above the next
key that you press. [MEM] is the
yoperation of the Ãkey.
The MEMORY menu is displayed.
3. Press 5to select 5:Reset.
The RESET menu is displayed.
4. Press 1to select 1:All Memory.
The RESET MEMORY menu is displayed.
5. Press 2to select 2:Reset.
All memory is cleared, and the calculator
is reset to the factory default settings.
When you reset the TI.83, the display
contrast is reset.
¦If the screen is very light or blank, press
and release y, and then press and
hold }to darken the screen.
¦If the screen is very dark, press and
release y, and then press and hold †
to lighten the screen.
First Steps

6 Getting Started
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Use the quadratic formula to solve the quadratic equations 3X2+ 5X + 2 = 0
and 2X2NX + 3 = 0. Begin with the equation 3X2+ 5X + 2 = 0.
1. Press 3¿ƒ[A] (above ) to
store the coefficient of the X2term.
2. Press ƒ[ :] (above Ë). The colon
allows you to enter more than one
instruction on a line.
3. Press 5¿ƒ[B] (above ) to
store the coefficient of the X term. Press
ƒ[ :] to enter a new instruction on
the same line. Press 2¿ƒ[C]
(above ) to store the constant.
4. Press Íto store the values to the
variables A, B, and C.
The last value you stored is shown on the
right side of the display. The cursor moves
to the next line, ready for your next entry.
5. Press £Ìƒ[B] Ãy[‡] ƒ[B]
¡¹4ƒ[A] ƒ[C] ¤¤¥£2
ƒ[A] ¤to enter the expression for
one of the solutions for the quadratic
formula,
−+−
bb ac
a
24
2
6. Press Íto find one solution for the
equation 3X2+ 5X + 2 = 0.
The answer is shown on the right side of
the display. The cursor moves to the next
line, ready for you to enter the next
expression.
Entering a Calculation: The Quadratic Formula

Getting Started 7
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You can show the solution as a fraction.
1. Press to display the MATH menu.
2. Press 1 to select 1:4Frac from the MATH
menu.
When you press 1, Ans4Frac is displayed on
the home screen. Ans is a variable that
contains the last calculated answer.
3. Press Íto convert the result to a
fraction.
To save keystrokes, you can recall the last expression you entered, and then
edit it for a new calculation.
4. Press y[ENTRY] (above Í) to recall
the fraction conversion entry, and then
press y[ENTRY] again to recall the
quadratic-formula expression,
−+−
bb ac
a
24
2
5. Press }to move the cursor onto the +sign
in the formula. Press ¹to edit the
quadratic-formula expression to become:
−−−
bb ac
a
24
2
6. Press Íto find the other solution for
the quadratic equation 3X2+ 5X + 2 = 0.
Converting to a Fraction: The Quadratic Formula

8 Getting Started
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Now solve the equation 2X2NX + 3 = 0. When you set a+bicomplex number
mode, the TI.83 displays complex results.
1. Press z††††††(6 times), and
then press ~to position the cursor over
a+bi. Press Íto select a+bicomplex-
number mode.
2. Press y[QUIT] (above z) to return to
the home screen, and then press ‘to
clear it.
3. Press 2¿ƒ[A] ƒ[ :] Ì1
¿ƒ[B] ƒ[ :] 3¿ƒ
[C] Í.
The coefficient of the X2term, the
coefficient of the X term, and the constant
for the new equation are stored to A, B,
and C, respectively.
4. Press y[ENTRY] to recall the store
instruction, and then press y[ENTRY]
again to recall the quadratic-formula
expression,
−−−
bb ac
a
24
2
5. Press Íto find one solution for the
equation 2X2NX + 3 = 0.
6. Press y[ENTRY] repeatedly until this
quadratic-formula expression is displayed:
−+−
bb ac
a
24
2
7. Press
Íto find the other solution for
the quadratic equation: 2X2NX + 3 = 0.
Note: An alternative for solving equations for real numbers is to use the built-in Equation
Solver (Chapter 2).
Displaying Complex Results: The Quadratic Formula

Getting Started 9
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Take a 20 cm. × 25 cm. sheet of paper and cut X × X squares from two corners.
Cut X × 12.5 cm. rectangles from the other two corners as shown in the
diagram below. Fold the paper into a box with a lid. What value of X would
give your box the maximum volume V? Use the table and graphs to determine
the solution.
Begin by defining a function that describes the
v
olume of the box.
From the diagram: 2X + A = 20
2X + 2B = 25
V = A B X
Substituting: V = (20 N2X) (25à2 NX) X
1. Press oto display the Y= editor, which is
where you define functions for tables and
graphing.
2. Press £20 ¹2„¤£25 ¥2¹
„¤„Íto define the
volume function as Y1in terms of X.
„lets you enter Xquickly, without
having to press ƒ. The highlighted =
sign indicates that Y1is selected.
Defining a Function: Box with Lid
20 A
X
X B X B
25

10 Getting Started
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The table feature of the TI.83 displays numeric information about a function.
You can use a table of values from the function defined on page 9 to estimate
an answer to the problem.
1. Press y[TBLSET] (above p) to
display the TABLE SETUP menu.
2. Press Íto accept TblStart=0.
3. Press 1Íto define the table increment
@Tbl=1. Leave Indpnt: Auto and
Depend: Auto so that the table will be
generated automatically.
4. Press y[TABLE] (above s) to display
the table.
Notice that the maximum value for Y1
(box’s volume) occurs when Xis about 4,
between 3and 5.
5. Press and hold †to scroll the table until a
negative result for Y1is displayed.
Notice that the maximum length of Xfor
this problem occurs where the sign of Y1
(box’s volume) changes from positive to
negative, between 10 and 11.
6. Press y[TBLSET].
Notice that TblStart has changed to 6to
reflect the first line of the table as it was
last displayed. (In step 5, the first value of
Xdisplayed in the table is 6.)
Defining a Table of Values: Box with Lid

Getting Started 11
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You can adjust the way a table is displayed to get more information about a
defined function. With smaller values for @Tbl, you can zoom in on the table.
1. Press 3Íto set TblStart. Press Ë1
Íto set @Tbl.
This adjusts the table setup to get a more
accurate estimate of Xfor maximum
volume Y1.
2. Press y[TABLE].
3. Press †and }to scroll the table.
Notice that the maximum value for Y1is
410.26, which occurs at X=3.7. Therefore,
the maximum occurs where 3.6<X<3.8.
4. Press y[TBLSET]. Press 3 Ë6Íto
set TblStart. Press Ë01 Íto set @Tbl.
5. Press y[TABLE], and then press †and }
to scroll the table.
Four equivalent maximum values are
shown, 410.60 at X=3.67, 3.68, 3.69, and
3.70.
6. Press †and }to move the cursor to 3.67.
Press ~to move the cursor into the Y1
column.
The value of Y1at X=3.67 is displayed on
the bottom line in full precision as
410.261226.
7. Press †to display the other maximums.
The value of Y1at X=3.68 in full precision is
410.264064, at X=3.69 is 410.262318, and at
X=3.7 is 410.256.
The maximum volume of the box would
occur at 3.68 if you could measure and cut
the paper at .01-cm. increments.
Zooming In on the Table: Box with Lid

12 Getting Started
8300GETM.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 11:06 AM Printed: 02/19/01 11:06
AM Page 12 of 18
You also can use the graphing features of the TI.83 to find the maximum value
of a previously defined function. When the graph is activated, the viewing
window defines the displayed portion of the coordinate plane. The values of
the window variables determine the size of the viewing window.
1. Press pto display the window
editor, where you can view and edit the
values of the window variables.
The standard window variables define the
viewing window as shown. Xmin, Xmax,
Ymin, and Ymax define the boundaries of
the display. Xscl and Yscl define the
distance between tick marks on the Xand
Yaxes. Xres controls resolution.
Xmax
Ymin
Ymax
Xscl
Yscl
Xmin
2. Press 0Íto define Xmin.
3. Press 20 ¥2to define Xmax using an
expression.
4. Press Í. The expression is evaluated,
and 10 is stored in Xmax. Press Íto
accept Xscl as 1.
5. Press 0Í500 Í100 Í1 Í
to define the remaining window variables.
Setting the Viewing Window: Box with Lid