Texas Instruments TI-84 Plus C Getting Started

Getting Started with the

TI-84 Plus C Silver Edition

Graphing Calculator

This guidebook applies to software version 4.0. To obtain the latest version of the documentation, go to education.ti.com/go/download.

Important Information

Except as otherwise expressly stated in the License that accompanies a program, Texas Instruments makes no warranty, either express 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 amount set forth in the license for the program. Moreover, Texas Instruments shall not be liable for any claim of any kind whatsoever against the use of these materials by any other party.

Contents

Important Information................................................................... ii

Getting Started with the TI-84 Plus C Silver Edition .............1

Documentation Conventions......................................................... 1

Using the TI-84 Plus C in the Classroom........................................ 1

Using Color on the TI-84 Plus C ..................................................... 1

TI-84 Plus C Keyboard..................................................................... 4

Turning On and Turning Off the TI-84 Plus C ............................... 7

Setting the Display Brightness....................................................... 8

The Home Screen............................................................................ 9

Setting Modes............................................................................... 16

Using the Clock............................................................................. 22

Equation Operating System (EOS™) ........................................... 23

Entering Expressions and Instructions......................................... 25

Pictures and Backgrounds............................................................ 29

Using Variable Names .................................................................. 30

Storing Variable Values................................................................ 31

Recalling Variable Values............................................................. 32

QuickPlot and Fit Equation.......................................................... 33

ENTRY (Last Entry) Storage Area................................................. 34

Menus............................................................................................ 36

VARS Menus.................................................................................. 39

Grouping files ............................................................................... 41

Special Features of the TI-84 Plus C............................................. 42

Other TI-84 Plus C Features.......................................................... 42

Interchangeable Faceplates......................................................... 44

Battery Information ..................................................................... 45

Replacing TI Rechargeable Batteries........................................... 47

TI-84 Plus C Charging Station ...................................................... 49

Transferring the OS from calculator to calculator...................... 52

Error Conditions ........................................................................... 53

Linking Compatibility................................................................... 54

...................................... 57

Texas Instruments Support and Service

Service and Warranty Information.............................................. 57

iii

Getting Started with the TI-84 Plus C Silver Edition

Documentation Conventions

This Getting Started guide is similar to Chapter 1 of the TI-84 Plus C Silver Edition guidebook. Several of the chapters in the full guidebook are referenced in this Getting Started guide. The full guidebook is available as a free download from education.ti.com/go/download.

In this document, referred to as the TI-84 Plus C.

the TI-84 Plus C

Using the TI-84 Plus C in the Classroom

The TI-84 Plus C shares many features with the TI-84 Plus. However, some features you may be accustomed to using in the classroom may differ. Some of these differences are listed here.

• TI-Navigator™ software supports the TI-84, T SE. TI-Navigator™ software does not support the TI-84 Plus C.

• TI-84 Plus C does not work with TI-Presenter™ video adapter or ViewScreen™ overhead panel, but the TI-84 Plus C view option in the TI-SmartView™ software allows you to project the graphing calculator emulator to the classroom.

• Some files and variables are compatible between the TI-84 Plus C and the TI-84 Plus family of graphing calculators. For more information on file compatibility, see Linking Compatibility later in this chapter.

• The TI-84 Plus C graphing calculator comes equipped with a Li-ion rechargeable battery. To ensure battery life, store the graphing calculators in the TI-84 Plus C Charging Station, or connect individual graphing calculators to a wall charger.

Warning: RAM memory will be lost if the battery charge is lost. You should back up or archive your variables if your battery power gets low.

For more information on the batteries and the charging station, see Battery Information and TI-84 Plus C Charging Station later in this chapter.

Silver Edition graphing calculator is also

-84 Plus, and TI-84 Plus

Using Color on the TI-84 Plus C

The TI-84 Plus C graphing calculator has many color options and a high resolution display that allows more information to be shown on the screen. The TI-84 Plus C uses color in the following ways:

Getting Started with the TI-84 Plus C Silver Edition 1

• Y= editor for line color.

• DRAW commands for line color, such as vertical lines, circles, and text on the graph screen.

• The graph format screen for grid, axes, or border color, and applying a background image or color.

• Statistical Plots.

The color options are selected using a spinner, which can contain various options depending on the feature. Press color options to set a color.

| and ~ to scroll through the

Note: T areas so that all features are visible.

 You can reset the calculator to its default settings, including color

ake care to choose appropriate co

settings, by pressing y L

7 2 2.

lor combinations for the graph

Using Color on the Graph Screen

The examples below show how to set line color on the Y= editor using the spinner, and how to set a Background Image for a graph.

Enter an equation in the Y= editor.

1. Press o.

2. Press k „

¡ Ã 6.

2 Getting Started with the TI-84 Plus C Silver Edition

To set the line color in the Y= editor:

3. Press y | | | to sele

the color/line box to the left of Y=, and then press Í.

The spinner dialog box becomes active.

4. Press ~ ~ ~ to select

magenta.

5. Press †.

Note: The thick line style is the default. It can be changed by pressing | or ~.

6. Press † to highlight OK and then press Í.

To set a Background Image:

7. Press y ..

Set grid color, axes, and border color as desired.

8. Press } or † as necessary to highlight Background.

The spinner dialog box becomes active.

9. Press ~ as necessary to select the desired Background Image or color.

Note: Your pre-loaded Image Var may be different than the one displayed.

Note: To create Background Image Vars, use the free TI Connect™ software to convert and send images to your TI-84 Plus C graphing calculator.

Getting Started with the TI-84 Plus C Silver Edition 3

10. Press r to see the graph

and trace points.

Note: You can manipulate the graph to “fit” an object in the Background Image Var. You can also use QuickPlot and Fit Equation to fit an equation to a shape. (See QuickPlot later in this chapter.)

TI-84 Plus C Keyboard

Generally, the keyboard is divided into these zones: graphing keys, editing keys, advanced function keys, and scientific calculator keys.

Keyboard Zones

Graphing—Graphing keys access the interactive graphing features. The

third function of these keys (t ^-a) displays the shortcut menus, which include templates for fractions, n/d, quick matrix entry, and some of the functions found on the MATH and VARS menus. When some features are active, you may also see a shortcut menu in the t b location for special shortcuts available in that particular feature.

Editing—Edi

ting keys allow you to edit expressions and values.

Advanced—Advanc advanced functions.

Scientific—S scientific calculator.

4 Getting Started with the TI-84 Plus C Silver Edition

ed function keys display menus that access the

cientific calculator keys access the capabilities of a standard

TI-84 Plus C Silver Edition

Graphing Keys

Editing Keys

Advanced Function Keys

Scientific Calculator Keys

Using the Color.Coded Keyboard

The keys on the TI-84 Plus C are color-coded to help you easily locate the key you need.

The light colored keys are the number keys. The ke the keyboard are the common math functions. The keys across the top set up and display graphs. The Œ key provides access to applications such as Polynomial Root Finder and Simultaneous Equation Solver, Inequality Graphing, and more.

Note: Catalog Help is an application on the TI-84 Plus, but is built into the TI-84 Plus C operating system. The Catalog Help contains syntax information for most menu items, and most of the functions in the catalog. To use Catalog Help on the TI-Plus C, select a menu item and then press Ã.

The primary function of each key is printe when you press , the MATH menu is displayed.

ys along the right

side of

d on the keys. For example,

Getting Started with the TI-84 Plus C Silver Edition 5

Using the y and ƒ Keys

The secondary function of each key is printed above the key in the same color as the y key. When you press the y key, the character, abbreviation, or word printed above the other keys becomes active for the next keystroke. For example, when you press y and then , the

TEST menu is displayed. This guidebook describes this keystroke

combination as y :.

The flashing cursor changes the cursor location, or in the status bar on the top of the screen.

2nd key indicator on the status bar

to Þ when you press y. The Þ may show in

Many keys also have a third function. These functions are

printed above

the keys in the same color as the ƒ key. The third functions enter alphabetic characters and special symbols, as well as access SOLVE and shortcut menus. For example, when you press ƒ and then , the

A is entered. This guidebook describes this keystroke combination

letter as ƒ [

A].

If you want to enter several alphabetic characters in a row, you can press y 7 to

lock the alpha key in the On position and avoid having to

press ƒ multiple times. Press ƒ a second time to unlock it.

The flashing cursor changes to Ø when

you press

ƒ, even if you are

accessing a function or a menu. The Ø may show in the cursor location, or in the status bar on the top of the screen.

Alpha key indicator on the status bar

6 Getting Started with the TI-84 Plus C Silver Edition

TI-84 Plus C Silver Edition

y Accesses the second function printed above each key.

Accesses the third function printed above each key.

ƒ ^ - a

Access shortcut menus for functionality including templates for fractions, n/d, and other functions.

Turning On and Turning Off the TI-84 Plus C

Turning On the Graphing Calculator

To turn on the TI-84 Plus C, press É. An information screen displays reminding you that you can press t ^ - a to display the shortcut menus, and press Ã for Catalog Help. This message also displays when you reset RAM. When some features are active, you may also see a shortcut menu in the t b location for special shortcuts available in that particular feature.

 To continue but not see this information screen again, press 1.

 To continue and see this information screen again the next time you

• If you previously had turned off the graphing calculator by pressing

turn on the TI-84 Plus C

, press 2.

y M, the TI-84 Plus C displays the home screen as it was when you last used it and clears any error. (The information screen displays first, unless you chose not to see it again.) If the home screen is blank, press } to scroll through the history of previous calculations.

Getting Started with the TI-84 Plus C Silver Edition 7

• If Automatic Power Down™ (APD™) had previously turned off the graphing calculator, the TI-84 Plus C will return exactly as you left it, including the display, cursor, and any error.

• If the TI-84 Plus C is turned off and connected to another graphing calculator or personal computer, any communication activity will “wake up” the TI-84 Plus C.

To prolong the life of the battery, APD™ turns off the TI-84 Plus C automatically after about five minutes without any activity.

Turning Off the Graphing Calculator

To turn off the TI-84 Plus C manually, press y M.

• All settings and memory contents a Memory™ function.

• Any error condition is cleared.

re retained by the Constant

Setting the Display Brightness

Adjusting the Display Brightness

You can adjust the display brightness to suit your viewing angle and lighting conditions.

To adjust the contrast, follow these steps.

 Press y † to darken the screen one level at a time.

 Press y } to lighten the screen one level at a time.

The TI-84 Plus C retains the brightness setting in memory when it is

off.

turne

Automatic Dimming

The TI-84 Plus C has an automatic dimming feature. To help prolong battery life, the screen dims after 90 seconds of no activity. Press É to return the screen to the preset brightness setting. Pressing É does not affect any calculations, cursors, or error messages.

8 Getting Started with the TI-84 Plus C Silver Edition

The Home Screen

The home screen is the primary screen of the TI-84 Plus C. On this screen, enter instructions to execute and expressions to evaluate. The answers are displayed on the same screen. Most calculations are stored in the history on the home screen. You can press } and † to scroll through the history of entries on the home screen and you can paste the entries or answers to the current entry line.

Press y 5 from any screen to go to the home screen.

Enter a calculation.

1. Press y 5

the home screen, if needed.

to return to

2. Press y C 3 ¡ Ã 4 ¡ ~

Ã 6 Í.

Note: When you are in a

MathPrint™ template, the cursor turns to a right arrow to

indicate that you must press ~ to get out of the template before you continue entering the calculation.

Getting Started with the TI-84 Plus C Silver Edition 9

Displaying Entries and Answers

• When text is displayed, the TI-84 Plus C screen can display a maximum of 10 lines with a maximum of 26 characters per line in Classic mode. In MathPrint™ mode, fewer lines and fewer characters per line may be displayed, depending on the MathPrint™ template used.

• A dotted line separates each set of entries and answers.

• If an expression on the home screen, the Y= editor (Chapter 3 in the guidebook), or the program editor (Chapter 16 in the guidebook) is longer than one line, it wraps to the beginning of the next line in Classic mode. In MathPrint™ mode, an expression on the home screen or Y= editor that is longer than one line scrolls off the screen to the right. An arrow on the right side of the screen indicates that you can scroll right to see more of the expression. In numeric editors such as the window screen (Chapter 3), a long expression scrolls to the right and left in both Classic and MathPrint™ modes.

Tip: Press y ~ to move the cursor to the end of the line. Press y | to move the cursor to the beginning of the line.

• When an entry is executed on the home screen, the answer is displayed on the right side of the next line.

• The mode settings control the way the TI-84 Plus C interprets expressions and displays answers.

• Press z to switch between Classic and MathPrint™ modes and see expressions in both formats. The Classic and MathPrint™ modes are on the top line of the mode screen.

• If an answer, such as a list or matrix, is too long to display entirely on one line, an arrow (MathPrint™) or an ellipsis (Classic) is displayed to the right or left. Press ~ and | to display the answer.

MathPrint™ (default)

Entry

Answer

Entry

Answer

10 Getting Started with the TI-84 Plus C Silver Edition

Classic

Entry

Answer

Entry

Answer

Scrolling Through Previous Entries on the Home Screen

If all lines of the display are full, text scrolls off the top of the display.

You can scroll up through previous entries and answers on the home screen, answer that you want to use, you can select it and paste it (press Í) on the current entry line.

Note: List and matrix answers cannot be copied and pasted to the new entry line. However, you can copy the list or matrix command to the new entry line and execute the command again to display the answer.

 Press } or † to move the cursor to the entry or answer you want to

even if you have cleared the screen. When you find an entry or

copy and then press Í.

The TI-84 Plus C highlights the entry the cursor is on to help you select your desired choice.

The entry or answer that you copied is automatically pasted on the current input line at the cursor location.

Note: If the cursor is in a MathPrint™ expression, press t } to move the cursor out of the expression and then move the cursor to the entry or answer you want to copy.

 Press u or { to delete an entry/answer pair. After an

entry/answer pair has been deleted, it cannot be displayed or recalled again.

Note: For more information on using previous entries, see ENTRY (Last Entry) Storage Area later in this chapter.

Getting Started with the TI-84 Plus C Silver Edition 11

Returning to the Home Screen

To return to the home screen from any other screen, press y 5.

Status Bar

The status bar displays on all screens, and gives information about the selected calculator mode settings, any context help available for the item you currently have selected, and battery status. The status bar may also show a busy indicator if the calculator is performing an operation, Ø to

indicate the calculator is in alpha status, and function is active.

Selected mode settings are displayed on the top line of the status bar when the when the cursor is in the home screen history, since the mode may have been different for previous calculations.

Context help, if available, is displayed on the second line. status icon, busy indicator, alpha indicator, and second key indicator are on the right. When you scroll into the home screen history, the context help on the status bar displays HISTORY.

In the example below, the cursor is on help for GridColor is on the second line of the status bar.

sor is in the active entry area. Mode settings do not display

cur

Þ to indicate the secondary

e battery

e GridColor option. The context

Selected

MODE

settings.

Context help

for current

cursor

position.

12 Getting Started with the TI-84 Plus C Silver Edition

Battery icon.

This status bar also displays the busy indicator, alpha indicator, and second key indicator, depending on the state of the graphing calculator.

area of the

Using Shortcut Menus

Opens FRAC menu.

Opens FUNC menu.

Opens YVAR menu.

Opens special menus.

Opens MTRX menu.

TI-84 Plus C Silver Edition

Shortcut menus allow quick access to the following:

• Templates to enter fractions, and to

toggle between whole and

mixed fractions, and fractions and decimals.

• Selected functions from the MATH MATH and MATH NUM menus as you would see them in a textbook, when in MathPrint™ mode. Functions include absolute value, numeric differentiation, numeric integration, summation, log base n, square root, permutations, combinations, and factorials.

• Quick MathPrint™ matrix entry, when available.

• Names of function variables from the VARS Y-VARS menu.

To open a shortcut menu, press t plus the F-key that corresponds to the menu, that is, ^ for FRAC, _ for FUNC, ` for MTRX, a for YVAR, or b for special menus within interactive graph activities such as DRAW or QuickPlot and Fit Equation, and more. To select a menu item, either press the number corresponding to the item, or use the arrow keys to move the cursor to the appropriate line and then press Í.

Getting Started with the TI-84 Plus C Silver Edition 13

All shortcut menu items except matrix templates can also be selected using standard menus. For example, you can choose the summation template from three places:

FUNC shortcut menu

MATH MATH menu

Catalog

The shortcut menus are available to us calculator is in Classic mode, or if a screen is displayed that does not support MathPrint™ display, entries will be displayed in Classic display. The MTRX menu is only available in MathPrint™ mode on the home screen and in the Y= editor.

Note: Shortcut menus may not be available if t plus F-key combinations are used by an application that is running.

e where input is allowed. If the

Busy Indicator

14 Getting Started with the TI-84 Plus C Silver Edition

Display Cursors

In most cases, the appearance of the cursor indicates what will happen when you press the next key or select the next menu item to be pasted as a character.

Note: The second cursor

and alpha cursor may appear

depending on the context.

Cursor Appearance Effect of Next Keystroke

on the status bar,

Entry Solid rectangle

aracter is entered at the

A ch cursor; any existing character is overwritten.

Insert Underline

Second Reverse arrow

A character is inserted in front of the cursor location.

A 2nd character is entered or a 2nd operation is executed.

Alpha Reverse A

An alpha character is entered,

SOLVE is executed,

or shortcut menus are displayed.

Full Checkerboard rectangle#No entry; the maximum

characters are entered at a prompt or memory is full. Also indicates the limit of the allowed MathPrint™ mode levels.

MathPrint™ Right arrow The cursor moves to either

the next part of the template or out of the template. Press the right arrow to move out of all MathPrint™ templates before entering the remaining terms in an expression.

If you press ƒ

A (A). If you press y during an insertion, the underlined cursors becomes

during a

n insertion, the cursor becomes an underlined

an underlined # (#).

Getting Started with the TI-84 Plus C Silver Edition 15

Note: If you highlight a small character such as a colon or a comma and then press ƒ or y, the cursor does not change because the cursor width is too narrow.

Graphs and editors sometimes display additional cursors, which are described in the guidebook.

Setting Modes

Checking Mode Settings

Mode settings control how the TI-84 Plus C displays and interprets numbers and graphs. Mode settings are retained by the Constant Memory™ feature when the TI-84 Plus C is turned off. All numbers, including e current mode settings.

lements of matrices and lists, are displayed according to the

To display the mode settings, press z. The current se highlighted. Defaults are highlighted below. The following pages describe the mode settings in detail.

Note: When you press z, the cursor is on NORMA to switch between the MathPrint™ and Classic modes.

MATHPRINT CLASSIC Controls whether inputs and

outputs on the home screen and in the Y= editor are displayed as they are in textbooks

NORMAL SCI ENG Numeric notation FLOAT 0 1 2 3 4 5 6 7 8 9 Number of decimal places in

answers

RADIAN DEGREE Unit of angle measure FUNCTION PARAMETRIC POLAR SEQ Type of graphing THCK DOT-THICK THIN DOT-THIN Resets all Y= line styles SEQUENTIAL SIMUL Whether to plot sequentially or

simultaneously

REAL a+b

FULL HORIZONTAL GRAPH-TABLE Full screen, two split-screen modes FRACTION TYPE: n/d Un/d Displays results as simple fractions

ANSWERS:

i re^qi

AUTO

DEC FRAC-APPROX

Real, rectangular complex, or polar complex

or mixed fractions Controls the format of the

answers

ttings are

L by default. Press }

16 Getting Started with the TI-84 Plus C Silver Edition

1 2

3 4

---+

x2xd



GOTO 2ND FORMAT GRAPH: No Yes S

STAT DIAGNOSTICS: Off On Determines which information is

STAT WIZARDS: On Off Determines if syntax help prompts

SET CLOCK Sets the time and date.

hortcut to the Format Graph

screen (y .)

displayed in a statistical regression calculation

are provided for optional and required arguments for many statistical, regression and distribution commands and functions.

Changing Mode Settings

To change mode settings, follow these steps.

1. Press † or } to move the cursor to th want to change.

2. Press ~ or | to move the cursor to the setting you want.

3. Press Í.

e line of the setting that you

Setting a Mode from a Program

You can set a mode from a program by entering the name of the mode as an instruction; for example, command line, select the mode setting from the mode screen; the instruction is pasted to the cursor location.

Func or Float. From a blank program

MATHPRINT, CLASSIC

MathPrint™ mode displays most inputs and outputs the way they are

shown in textbooks, such as

Classic mode displays expressi such as 1/2 + 3/4.

Note: If you switch betwee however matrix calculations will not be preserved.

Getting Started with the TI-84 Plus C Silver Edition 17

n these modes, most entries will be preserved;

and

ons and answers as if written on one line,

NORMAL, SCI, ENG

Notation modes only affect the way an answer is displayed on the home screen. Numeric answers can be displayed with up to 10 digits and a twodigit exponent and as fractions. You can enter a number in any format.

Normal notation mode is the usual way we express numbers, with digits

to the left and right of the decimal, as in

Sci (scientific) notation mode expresses numbers in two parts. The

12345.67.

significant digits display with one digit to the left of the decimal. The appropriate power of 10 displays to the right of å, as in

Eng (engineering) notation mode is similar to scientific notation.

1.234567â4.

However, the number can have one, two, or three digits before the decimal; and the power-of-10 exponent is a multiple of three, as in

12.34567â3.

Note: If you select

Normal notation, but the answer cannot display in 10

digits (or the absolute value is less than .001), the TI-84 Plus C expresses the answer in scientific notation.

FLOAT, 0 1 2 3 4 5 6 7 8 9

Float (floating) decimal mode displays up to 10 digits, plus the sign and

decimal.

FIX 0123456789 decimal mode specifies the number of digits (0 through

9) to display to the right of the decimal for decimal answers.

The decimal setting applies to

The decimal setting applies to these Answer mode setting:

• An answer displayed on the home screen

oordinates on a graph (Chapters 3, 4, 5, and 6 in the guidebook)

•

•The

Tan ge nt ( DRAW instruction equation of the line, x, and dy/dx

values (Chapter 8 in the guidebook)

• Results of CALCULATE operations (Chapters 3, 4, 5, and 6 in the guidebook)

• The regression equation stored after the execution of a regression model (Chapter 12 in the guidebook)

Normal, Sci, and Eng notation modes.

numbers, with respect to the

RADIAN, DEGREE

Angle modes control how the TI-84 Plus C interprets angle values in trigonometric functions and polar/rectangular conversions.

18 Getting Started with the TI-84 Plus C Silver Edition

Radian mode interprets angle values as radians. Answers display in

radians.

Degree mode interprets angle values as degrees. Answers display in

degrees.

FUNCTION, PARAMETRIC, POLAR, SEQ

Graphing modes define the graphing parameters. Chapters 3, 4, 5, and 6 in the guidebook describe these modes in detail.

Func (function) graphing mode plots functions, where Y is a function of

X (Chapter 3).

Par (parametric) graphing mode plots relations, where X and Y are

functions of T (Chapter 4).

Pol (polar) graphing mode plots functions, where r is a function of q

(Chapter 5).

Seq (sequence) graphing mode plots sequences (Chapter 6).

THICK, DOT-THICK, THIN, DOT-THIN

THICK plotting mode is a quick way to reset all Y= line styles to a thick

line connecting each point calculated for the selected functions. You can change individual line styles in the Y= editor.

Note: The T

HICK plotting mode on the TI-84 Plus C is equivalent to the

CONNECTED plotting mode on the TI-84 Plus graphing calculator.

DOT-THICK plotting mode is a quick way to reset all Y= line styles to a

large dot and plots only the calculated points of the selected functions. You can change individual line styles in the Y= editor.

Note: The

T-THICK plotting mode on the TI-84 Plus C is equivalent to the DOT plotting mode on the TI-84 Plus graphing calculator. You can change individual line styles in the Y= editor.

THIN plotting mode is a quick way to reset all Y= line styles to a thin line

connecting each point calculated for the selected functions.

Note: Use THI

plotting mode for function graphing when looking at

any functions which asymptote to an axis.

DOT-THIN plotting mode is a quick way to reset all Y= line styles to a

small dot and plots only the calculated points of the selected functions. You can change individual line styles in the Y= editor.

SEQUENTIAL, SIMUL

Sequential graphing-order mode evaluates and plots one function

completely before the next function is evaluated and plotted.

Getting Started with the TI-84 Plus C Silver Edition 19

Simul (simultaneous) graphing-order mode evaluates and plots all

selected functions for a single value of X and then evaluates and plots them for the next value of X.

Note: R wi

egardless of which graphing mode is selected, the TI-84 Plus C

ll sequentially graph all stat plots before it graphs any functions.

REAL, a+bi, re^(qi)

Real mode does not display complex results unless complex numbers are

entered as input.

Two complex modes display complex

a+bi (rectangular complex mode) displays complex numbers in the

• form a+b

•

re^(qi) (polar complex mode) displays complex numbers in the form

re^(q

i).

results.

Note: When you use the n/d template, both n and d must be real

numbers. For example, you can enter (the answer is displayed as

a decimal value) but if you enter , a data type error displays. To

perform division with a complex number in the numerator or denominator, use regular division instead of the n/d template.

See the complete guidebook for complete details on complex numbers and how the TI-84 Plus C functions work with complex number entries.

FULL, HORIZONTAL, GRAPH-TABLE

Full screen mode uses the entire screen to display a graph or edit screen.

Each split-screen mode displays two screen

s simultaneously.

• Horiz (horizontal) mode displays the current graph on the top half of the screen; it displays the home screen or an editor on the bottom half (Chapter 9 in the guidebook).

• G-T (graph-table) mode displays the current graph on the left half of the screen; it displays the table screen on the right half (Chapter 9 in the guidebook).

20 Getting Started with the TI-84 Plus C Silver Edition

FRACTION TYPE: n/d, Un/d

n/d displays results as a simple fraction. Fractions may contain a

maximum of six digits in the numerator; the value of the denominator may not exceed 9999.

Un/d di be all be integers. If

U … n/d. If n or d is a non-integer, a syntax error is displayed. The whole

splays results as a mixed number, if applicable.

U is a non-integer, the result may be converted

U, n, and d must

number, numerator, and denominator may each contain a maximum of three digits.

Note: To perform division with a complex number in the num

erator or

denominator, use regular division instead of the n/d template.

ANSWERS: AUTO, DEC, FRAC-APPROX

Auto displays answers in a similar format as the input. For example, if a

fraction is entered in an expression, the answer will be in fraction form, if possible. If a decimal appears in the expression, the output will be a decimal number.

displays answers as integers or decimal numbers.

Dec

ac-Approx attempt

decimals carried by the graphing calculator. A fraction answer may be exact or approximate for any real number result.

Note: The Answers mode setting also affects how values in sequences, lists, and tables are displayed. Choose are displayed in either decimal or fraction form. You can also convert values from decimal to fraction or fraction to decimal using the shortcut menu or the MATH menu.

s a fraction conversion using the number of

Dec or Frac to ensure that values

FRAC

GOTO 2ND FORMAT GRAPH: NO, YES

No does not display the FORMAT graph screen, but can always be

accessed by pressing y ..

aves the mode screen and displays

Yes le

the FORMAT graph screen when

you press Í so that you can change the graph format settings. To return to the mode screen, press z.

STAT DIAGNOSTICS: OFF, ON

Off displays a statistical regression calculation without the correlation

coefficient (r) or the coefficient of determination (r

On displays a statistical regression calculation with the corre coefficient (r), and the coefficient of determination (r

Getting Started with the TI-84 Plus C Silver Edition 21

lation

), as appropriate.

STAT WIZARDS: ON OFF

On: Selection of menu items in MATH PROB, STAT CALC, DISTR DISTR,

DISTR DRAW and seq( in LIST OPS displays a screen which provides syntax help (wizard) for the entry of required and optional arguments into the command or function. The function or command will paste the entered arguments to the Home Screen history or to most other locations where the cursor is available for input. Some calculations will compute directly from the wizard. If a command or function is accessed from N the command or function will paste without wizard support. Use Catalog Help for more syntax help when needed. To use Catalog Help, select a menu item and then press Ã.

The function or command will paste to the cursor loca

Off: syntax help (wizard)

tion with no

SET CLOCK

Use the clock to set the time, date, and clock display formats.

Using the Clock

Use the clock to set the time and date, select the clock display format, and turn the clock on and off. The clock is turned on by default and is accessed from the mode screen.

Displaying the Clock Settings

1. Press z.

2. Press } } to move the cursor to

SET CLOCK.

3. Press Í.

22 Getting Started with the TI-84 Plus C Silver Edition

Changing the Clock Settings

1. Press ~ or | to h

field.

• Press Í to select the

date and time format.

• Press ‘ and type a

number for the year, month, date, hour, and minute fields.

2. To save changes, press † to

highlight Í.

SAVE, and then press

ighlight each

Turning the Clock On and Off

1. Press y N.

2. Press † or } to scroll the

CATALOG until the selection

cursor points to

ClockOn.

3. Press Í Í.

ClockOff or

Equation Operating System (EOS™)

Order of Evaluation

The Equation Operating System (EOS™) defines the order in which functions in expressions are entered and evaluated on the TI-84 Plus C. EOS™ lets you enter numbers and functions in a simple, straightforward sequence.

EOS™ evaluates the functions in an exp

Order

Number

1 Functions that precede the argument, such as ‡,

2 Functions that are entered after the argument,

Function

sin(, or log(

such as

2, M1

, !, ¡, r, and conversions

Getting Started with the TI-84 Plus C Silver Edition 23

ession in this order.

Order

5x32

Number

Function

Powers and roots, such as

4 Permutations (

nPr) and combinations (nCr)

5 Multiplication, implied multiplication, and

division

6 Addition and subtraction

7 Relational functions, such as > or 

8 Logic operator

and

9 Logic operators or and xor

Note: Within a priority level, EOS™ evaluates functions from left to right. Calculations within parentheses are evaluated first.

Implied Multiplication

The TI-84 Plus C recognizes implied multiplication, so you need not press ¯ to express multiplication in all cases. For example, the TI-84 Plus C interp

Note: TI-84 Plus other graphing calculators. For example, the TI-84 Plus C evaluates

(1à2)…X, while some graphing calculators may evaluate 1à2X as

1à(2…X) (Chapter 2 in the guidebook).

2p, 4sin(46), 5(1+2), and (2…5)7 as implied multiplication.

rets

C implied multiplication rules differ from those of some

1à2X

Parentheses

All calculations inside a pair of parentheses are completed first. For example, in the expression inside the parentheses, 1+2, and then multiplies the answer, 3, by 4.

4(1+2), EOS™ first evaluates the portion

Negation

To enter a negative number, use the negation key. Press Ì and then enter the number. On the TI-84 Plus C, negation is in the third level in the EOS™ hierar

chy. Functions in the first level, such as squar

evaluated before negation.

24 Getting Started with the TI-84 Plus C Silver Edition

ing, are

Example: MX2, evaluates to a negative number (or 0). Use parentheses to square a negative number.

Note: Use the ¹ press ¹ to enter a negative number, as in indicate subtraction, as in

A Ì ƒ B, it is interpreted as implied multiplication (A…MB).

key for subtraction and the Ì key for negation. If you

9 ¯ ¹ 7, or if you press Ì to

9 Ì 7, an error occurs. If you press

Entering Expressions and Instructions

What Is an Expression?

An expression is a group of numbers, variables, functions and their arguments, or a combination of these elements. An expression evaluates to a single answer. On the TI-84 Plus C, you enter an expression in the

same order as you expression.

You can use an expression on the home scr most places where a value is required, you can use an expression to enter a value.

would write it on paper. For example, pR

een

to calculate an answer. In

is an

Entering an Expression

To create an expression, you enter numbers, variables, and functions using the keyboard and menus. An expression is completed when you press Í, regardless of the cursor location. The entire expression is evaluated according to Equation Operating System (EOS™) rules, and the answer is displayed according to the mode setting for

Getting Started with the TI-84 Plus C Silver Edition 25

Answer.

Most TI-84 Plus C functions and operations are symbols comprising several characters. You must enter the symbol from the keyboard or a menu; do not spell it out. For example, to calculate the log of 45, you must press « the TI-84 Plus C interprets the entry as implied multip variables

Note: In MathPrint™ mode, press ~

45. Do not enter the letters L, O, and G. If you enter LOG,

lication of the

L, O, and G.

to get out of the MathPrint™

template and continue entering the expression.

Calculate 3.76 P (L7.9 + ‡5) + 2 log 45.

MathPrint™

3 Ë 76 ¥ £ Ì 7 Ë 9 Ã

y C

5 ~ ¤ Ã 2 « 45 ¤

Classic

3 Ë 76 ¥ £ Ì 7 Ë 9 Ã

5 ¤ ¤ Ã 2 « 45 ¤

y C Í

Multiple Entries on a Line

To enter two or more expressions or instructions on a line, separate them with colons (ƒ [

:]). All instructions are stored together in last entry

(ENTRY).

Entering a Number in Scientific Notation

1. Enter the part of the number that precedes the exponent. This value can be an expression.

2. Press y D. â is pasted to the cursor location.

3. Enter the exponent, which can be one or two digits.

Note: If the exponent is negative, press Ì, and then enter the exponent.

26 Getting Started with the TI-84 Plus C Silver Edition

When you enter a number in scientific notation, the TI-84 Plus C does not automatically display answers in scientific or engineering notation. The mode settings and the size of the number determine the display format.

Functions

A function returns a value. For example, ÷, L, +, ‡, and log( are the functions in the example on the previous page. In general, the first letter of each function is lowercase. Most functions take at least one argument, as indicated by an open parenthesis following the name. For example, requires one argument,

sin(value).

sin(

Note: The Catalog Help contains syntax infor

functions in the catalog. To use Catalog Help, select a menu item and then press Ã.

mation for most of the

Instructions

An instruction initiates an action. For example, ClrDraw is an instruction that clears any drawn elements from a graph. Instructions cannot be used in expressions. In general, the first letter of each instruction name is uppercase. Some instructions take more than one argument, as indicated by an open parenthesis at the end of the name. For example, on the TI-84 Plus C, arguments:

Circle( requires three arguments, and has two optional

Circle(X,Y,radius[,color, linestyle]).

Interrupting a Calculation

To interrupt a calculation or graph in progress, which is indicated by the busy indicator in the status bar, press É.

When you interrupt a calculation, a menu is displayed.

• To return to the home screen, select

• To go to the location of the interruption, select

When you interrupt a graph, a partial graph is displayed.

• To return to the home screen, press ‘ or any

• To restart graphing, press a graphing key or select a graphing instruction.

1:Quit.

2:Goto.

non-graphing key.

TI-84 Plus C Edit Keys

Keystrokes Result

~ or | Moves the cursor within an expression; these keys

repeat.

Getting Started with the TI-84 Plus C Silver Edition 27

Keystrokes Result

} or † Moves the cursor from line to line within an

expression that occupies more than one line; these keys repeat.

Moves the cursor from term to term within an expression in MathPrint™ mode; these keys repeat.

On the home screen, scrolls through the history of entries and answers.

y | Moves the cursor to the beginning of an expression.

y ~ Moves the cursor to the end of an expression.

ƒ } On the home screen, moves the cursor out of a

MathPrint™ expression and up into history.

In the Y=editor, moves the cursor from a MathPrint™ expression to the previous Y-var.

ƒ † In the Y=editor, moves the cursor from a MathPrint™

expression to the next Y-var.

Í Evaluates an expression or executes an instruction.

‘ On a line with text on the home screen, clears the

current line.

On a blank line on the home screen, clears everything on the home screen.

In an editor, clears the expression or value where the cursor is located; it does not store a zero.

{ Deletes a character at the cursor; this key repeats.

y 6 Changes the cursor to an underline (__); inserts

characters in front of the underline cursor; to end insertion, press y 6 or press |, }, ~, or †.

y Changes the cursor or status bar indicator to Þ; the

next keystroke performs a

2nd function (displayed

above a key and to the left); to cancel 2nd, press y again.

ƒ Changes the cursor or status bar indicator to Ø; the

next keystroke performs a third function of that key (displayed above a key and to the right) or accesses a shortcut menu. To cancel ƒ, press ƒ or press |, }, ~, or †.

28 Getting Started with the TI-84 Plus C Silver Edition

Keystrokes Result

y 7 Changes the cursor to Ø; sets alpha-lock; subsequent

keystrokes access the third functions of the keys pressed; to cancel alpha-lock, press ƒ. If you are prompted to enter a name such as for a group or a program, alpha-lock is set automatically.

Note: The TI-84 Plus C does not automatically set alpha-lock for entries that require list names.

„ Pastes an X in

mode, or an

Func mode, a T in Par mode, a q in Pol

n in Seq mode with one keystroke.

Pictures and Backgrounds

The TI-84 Plus C uses both pictures and background images. They are both stored in Flash archive, but they are used in different ways:

• Image Vars (Image1 - Image9, and Image0) are variables stored in archive memory. graph area. Several images are pre-loaded on the TI-84 Plus C. You can also convert images to TI-84 Plus C Image Vars in the TI Connect™ software and load them to the calculator. You cannot create images on the calculator.

Note: TI Connect™ software is available as a free download from education.ti.com/go/download.

• Pic Vars (Pic1 - Pic 9, and Pic0) are also variables stored in archive memory. Pic Vars can be creating by drawing in the graphing area, and the changes saved and recalled to the graphing area. Saving a Pic Var will not include the Background Image behind your graphing area.

• Both Image Vars and Pic Vars are stored and run in Flash archive, not in RAM. They are both accessible in the VARS menu.

• Image Vars and Pic Vars can only be shared with another TI-84 Plus C graphing calculator.

• TI-84 Plus Pic Vars cannot be shared between the TI-84 Plus and the TI-84 Plus C graphing calculators.

• If you perform a RAM reset on the TI-84 Plus C, the Image Vars and Pic Vars remain in Archive memory for use.

• TI-84 Plus pictures are stored in RAM or archive, while TI-84 Plus C pictures are stored only in archive.

An Image Var is used as a Background Image in the

Getting Started with the TI-84 Plus C Silver Edition 29

Using Variable Names

Variables and Defined Items

You can enter and use several types of data, including real and complex numbers, matrices, lists, functions, stat plots, graph databases, graph pictures, and strings.

The TI-84 Plus C uses assigned names for variables and other items saved

. For

in memory

Variable Type Names

Real numbers (including fractions)

Complex numbers

Matrices ã

lists, you also can create your own five-character names.

A, B, ... , Z, q

Aä, ãBä, ãCä, ... , ãJä

Lists

Functions

Parametric equations X1T and Y1T, ... , X6T and Y6T

Polar functions r1, r2, r3, r4, r5, r6

Sequence functions u, v, w

Stat plots

Graph databases GDB1, GDB2, ... , GDB9, GDB0

Background images Image1, Image2, ... , Image9, Image0

Pictures Pic1, Pic2, ... , Pic9, Pic0

Strings Str1, Str2, ... , Str9, Str0

Apps Applications

AppVars Application variables

Groups Grouped variables

System variables

L1, L2, L3, L4, L5, L6, and user-defined

names

Y1, Y2, ... , Y9, Y0

Plot1, Plot2, Plot3

Xmin, Xmax, and others

Notes about Variables

• You can create as many list names as memory will allow (Chapter 11 in the guidebook).

• Programs have user-defined names and share memory with variables (Chapter 16 in the guidebook).

30 Getting Started with the TI-84 Plus C Silver Edition

• From the home screen or from a program, you can store to matrices (Chapter 10), lists (Chapter 11), strings (Chapter 15), system variables

Xmax (Chapter 1), TblStart (Chapter 7), and all Y= functions

such as (Chapters 3, 4, 5, and 6 in the guidebook).

• From an editor, you can store to matrices, lists, and Y= functions (Chapter 3 in the guidebook).

• From the home screen, a program, or an editor, you can store a value to a matrix element or a list element.

• You can use DRAW STO menu items to store and recall Pic Vars (Chapter 8 in the guidebook).

• Although most variables can be archived, system variables including r, T, X , Y, a n d q cannot be archived (Chapter 18 in the guidebook).

• Apps are independent applications, which are stored in Flash archive. by independent applications. You cannot edit or change variables in

AppVars unless you do so through the application which created

them.

AppVars is a variable holder used to store variables created

Storing Variable Values

Storing Values in a Variable

Values are stored to and recalled from memory using variable names. When an expression containing the name of a variable is evaluated, the value of the variable at that time is used.

To store a value to a variable from the home screen or a program using the ¿ key

1. Enter the value you want

2. Press ¿. ! is copied to the cursor location.

3. Press ƒ and then the letter of the variable to which you want to store the value.

4. Press Í. If you entered an expression, it is evaluated. The value is stored to the variable.

, begin on a blank line and follow these steps.

to store. The value can be an expression.

Displaying a Variable Value

To display the value of a variable, enter the name on a blank line on the home screen, and then press Í.

Getting Started with the TI-84 Plus C Silver Edition 31

Archiving Variables (Archive, Unarchive)

You can archive data, programs, or other variables in a section of memory called user data archive where they cannot be edited or deleted inadvertently. These archived variables are indicated by asterisks (ä) to the left of the variable names. These archived variables cannot be edited or executed. They can only be seen and unarchived. For example, if you archive list L1, you will see that L1 exists in memory but if you select it and paste the name L1 to the home screen, you won’t be able to see its contents or edit it until it is unarchived.

Note: Image Vars are run and stored in ar displayed in the VARS 4:Picture & Background, the BACKGROUND menu does not display the asterisk ä.

chive, but when Image Vars are

Recalling Variable Values

Using Recall (RCL)

To recall and copy variable contents to the current cursor location, follow these steps. To leave

1. Press y K. RCL and the edit cursor are displayed on the bottom

line of the screen.

2. Enter the name of the variable in one of five ways.

• Press ƒ and then the letter of the variable.

• Press y 9, and then select the name of the list, or press

L1] or [L2], and so forth.

y [

• Press y >, and then select the name of the matrix.

• Press  to display the

VARS Y-VARS menu; then select the type and then the name of

the variable or function.

• Press t a to display the YVAR shortcut menu, then select

the name of the function.

• Press  |, and then select the name of the program (in the

program editor only).

The variable name you selected is displayed on the bottom line and the cursor disappears.

RCL, press ‘.

VARS menu or  ~ to display the

32 Getting Started with the TI-84 Plus C Silver Edition

3. Press Í. The variable contents are inserted where the cursor was located before you began these steps.

Note: You can edit the characters pasted to the expression without affecting the value in memory.

QuickPlot and Fit Equation

QuickPlot and Fit Equation allows you to drop points on a graph screen and model a curve to those points using regression functions. You can select color and line style, draw points on a graph, and choose an equation to fit the drawn points. You can then store the results of the plot and equation. For details, refer to Chapter 12 in the guidebook.

QuickPlot and Fit Equation is an option in the … / menu.

Prior to starting the QuickPlot graph area, be sure to set your Background Image Var and other graph settings from the FORMAT screen. Also set your WINDOW or ZOOM settings.

and Fit Equation interactive feature on the

Drop points

on the

screen. Points can be saved to lists.

Calculate the regression equation, draw the curve, and store the function.

Getting Started with the TI-84 Plus C Silver Edition 33

ENTRY (Last Entry) Storage Area

Using ENTRY (Last Entry)

When you press Í on the home screen to evaluate an expression or execute an instruction, the expression or instruction is placed in a storage area called ENTRY (last entry). When you turn off the TI-84 Plus C, ENTRY is retained in memory.

recall ENTRY, press y [. The last entry is past

To cursor location, where you can edit and execute it. On the home screen or in an editor, the current line is cleared and the last entry is pasted to the line.

Because the TI-84 Plus C updates ENTRY only when you press Í, you can recall the previous expression.

5 Ã 7

Í y [

entry even if you have begun to enter the next

ed to the current

Note: You can also scroll up through previous entries a home screen, even if you have cleared the screen. When you find an entry or answer that you want to use, you can select it and paste it (press Í) on the current entry line. List and matrix answers cannot be copied and pasted to the new entry line.

For more information on copying an Scrolling Through Previous Entries on the Home Screen earlier in this chapter.

d pasting

previous entries, see

nd answers on the

Clearing ENTRY

Clear Entries (Chapter 18 in the guidebook) clears all data that the

TI-84 Plus C is holding in the screen history.

ENTRY storage area, and clears the home

Using Ans in an Expression

When an expression is evaluated successfully from the home screen or from a program, the TI-84 Plus C stores the answer to a storage area called Ans (last answer). Ans may be a real or complex number, a list, a matrix, or a string. When you turn off the TI-84 Plus C, the value in retained in memory.

34 Getting Started with the TI-84 Plus C Silver Edition

Ans is

You can use the variable Ans to represent the last answer in most places. Press y Z to copy the variable name the expression is evaluated, the TI-84 Plus C uses the value of

Ans to the cursor location. When

Ans in the

calculation.

Calculate the area of a garden plot 1.7 meters by 4.2 mete

rs. Then calculate the yield per square meter if the plot produces a total of 147 tomatoes.

1 Ë 7 ¯ 4 Ë 2

147 ¥ y Z

Continuing an Expression

You can use Ans as the first entry in the next expression without entering the value again or pressing y Z. On a blank line on the home screen, enter the function. The TI-84 Plus C pastes

the variable name

Ans to the

screen, then the function.

5 ¥ 2

9 Ë 9

¯ Í

Storing Answers

To store an answer, store Ans to a variable before you evaluate another expression.

nPr, nCr, and xth root

Note: template.

Calculate the area of a circle of radius 5 meters. Next, calculate the volume of a cylinder of radius 5 meters and height 3.3 meters, and then store the result in the variable V.

do not pull Ans into the MathPrint™

5 ¡

y B Í

3 Ë 3

¯ Í ¿ ƒ Í

Getting Started with the TI-84 Plus C Silver Edition 35

Menus

Using Menus

You can access most TI-84 Plus C operations using menus. When you press a key or key combination to display a menu, one or more menu names appear on the top line of the screen.

• The menu name on the left side of the top line is highlighted. Up to nine items in that menu are displayed, beginning with item 1, which also is highlighted.

• A number or letter identifies each menu item’s place in the menu. The order is 1 through 9, then 0, then A, B, C, and so on, if appropriate.

• When the menu continues beyond the displayed items, a down arrow ($) replaces the colon next to the last displayed item.

• When a menu item ends in an ellipsis ( secondary menu or editor when you select it.

• When an asterisk (ä) appears to the left of a menu item, that item is stored in user data archive (Chapter 18 in the guidebook).

...), the item displays a

Displaying a Menu

While using your TI-84 Plus C, you often will need to access items from its menus.

36 Getting Started with the TI-84 Plus C Silver Edition

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 displayed as a full screen.

Note: If a context help message is in the status bar when you press a menu which temporarily replaces the screen, that context help will remain in the status bar as a reminder that you are working within a context.

After you select an item from a menu, the screen where you are working usually is displayed again.

MATH menu is

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.

Note: FRAC shortcut menu items are found in the FRAC menu, and are also found on the MATH NUM menu. FUNC shortcut menu items are also found on the MATH MATH menu.

Scrolling a Menu

To scroll down the menu items, press †. To scroll up the menu items, press }.

To page down six menu items at a time, press ƒ †. To page up six

enu items at a time, press ƒ }.

fir

To go to the last menu item directly from the go to the first menu item directly from the last menu item, press †.

Getting Started with the TI-84 Plus C Silver Edition 37

st menu item, press }. To

Selecting an Item from a Menu

You can select an item from a menu in three ways.

• Press the number or letter of the item you want to cursor can be anywhere on the menu, and the item you select does not need to be displayed on the screen.

• Press † or } to move the cursor to the item you want, and then press Í.

After you select an item from a menu, the TI-84 Plus C typically displays th

• Move the cursor to the item you

e previous screen.

want, and then press Ã. For most commands, the Catalog Help syntax editor displays the correct syntax. Enter the syntax using the displayed help, and then press t a to paste. The Catalog Help pastes the complete command.

Press t b to escape without pasting the command.

select. The

the

Note: On items 1 through 9 and 0 are labeled in such a way that you can select them by pressing the appropriate number key. To move the cursor to the first item beginning with any alpha character or q, press the key combination for that alpha character or q. If no items begin with that character, the cursor moves beyond it to the next item.

LIST NAMES, PRGM EXEC, and PRGM EDIT menus, only

Leaving a Menu without Making a Selection

You can leave a menu without making a selection in any of four ways.

38 Getting Started with the TI-84 Plus C Silver Edition

• Press y 5 to return to the home screen.

• Press ‘ to return to the previous screen.

• Press a key or key combination for a different menu, such as  or y 9.

• Press a key or key combination for a different screen, such as o or y 0.

VARS Menus

VARS Menu

You can enter the names of functions and system variables in an expression or store to them directly.

To dis play the secondary menus, which show the names of the system variables.

1:Window, 2:Zoom, 4:Picture&Background, and 5:Statistics each access

more than one secondary menu.

VARS Y-VARS COLOR

1:Window... 2:Zoom... 3:GDB... 4:Picture & Background...

5:Statistics... 6:Table... 7:String...

VARS menu, press . All VARS menu items display

X/Y, T/q, and U/V/W variables ZX/ZY, ZT/Zq, and ZU variables

Graph database variables

Picture and Background (image)

variables

XY, G, EQ, TEST, and PTS variables

TAB LE variables

String variables

Selecting a Variable from the VARS Menu or VARS Y-VARS Menu

To dis play the VARS Y-VARS menu, press  ~. 1:Function,

2:Parametric, and 3:Polar display secondary menus of the Y= function

variables.

VARS Y-V ARS COLOR

1: Function... 2: Parametric...

3: Polar... 4: On/Off...

Yn functions XnT, YnT functions, also found on the

YVARS shortcut menu

rn functions, also found on the YVARS

shortcut menu Lets you select/deselect functions

Getting Started with the TI-84 Plus C Silver Edition 39

Note:

• The sequence variables (

second functions of ¬, −, and ®.

• These Y= function variables are also on the YVAR shortcut menu.

To select a variable from the VARS menus, follow these steps.

1. Display the

• Press  to display the

• Press  ~ to display the

2. Select the type of variable, such as

3:Polar from the VARS Y-VARS menu. A secondary menu is

displayed.

3. Press ~ or | to display other secondary menus.

4. Select a variable name from the menu.

It is pasted to the cursor location.

VARS or VAR S Y-VARS menu.

u, v, w) are located on the keyboard as the

VARS menu.

VARS Y-VARS menu.

2:Zoom from the VARS menu or

Selecting an argument from the VARS COLOR Menu

To dis play the VARS COLOR menu, press  ~ ~.

VARS Y-VARS COLOR

1: BLUE 2: RED 3: BLACK 4: MAGENTA 5: GREEN 6: ORANGE 7: BROWN 8: NAVY 9: LTBLUE 0: YELLOW A: WHITE B: LTGRAY C: MEDGRAY D: GRAY E: DARKGRAY

To select an argument from the

1. Press  ~ ~

40 Getting Started with the TI-84 Plus C Silver Edition

to display the VARS COLOR menu.

VARS COLOR menu, follow these steps.

2. Select the color argument, such as 2:RED.

It is pasted to the cursor location.

Note: Although the menu numbers for COLOR are 1-9, 0, A-E, colors are represented by the numbers 10-24 for selected programming commands.

Grouping files

Grouping lets you make a copy of two or more variables and store them in the Flash archive of the TI-84 Plus C. This function is similar to

ng" a computer file and storing it. For example, suppose that you

"zippi want to save data you collected for time, temperature, humidity, and barometric pressure because you may need to use the data for another assignment.

Grouping lets you keep these lists toget trying to locate the correct lists and remember which ones were collected together, you can simply recall the group. Grouping also saves space on your calculator by copying variables from RAM to Flash archive.

Grouping using the GROUP feature on the graphing calculator is for

sharing PC and TI Connect™ software for Mac each have a grouping file feature that is best for storing graphing calculator files on the computer. See the help file in the TI Connect™ software to understand more about the software groups files.

iles in the classroom and on the web. TI Connect™ software for

er for future use. Instead of

Note: Since Image Vars and Pic Vars reside in cannot group Image Vars and Pic Vars.

Flash archive, not RAM, you

To group files:

1. Press y L 8 1 to select Create New on the GROUP UNGROUP screen.

2. Type a group name and press Í.

3. Navigate to the files you want to group and select each file by moving the cursor to the file and pressing Í.

4. Press ~ 1 to select

The files you selected are grouped.

Done.

To ungroup files:

1. Press y L 8 ~ to select UNGROUP.

2. Move the cursor to the group name that you want to ungroup and press Í.

3. Press 3 to select Overwrite All.

Getting Started with the TI-84 Plus C Silver Edition 41

The files in the selected group are ungrouped.

Special Features of the TI-84 Plus C

3.5 Megabytes of Available Memory

3.5 MB of available memory is built into the TI-84 Plus C Silver Edition. About 21 kilobytes (K) of RAM (random access memory) are available for you to compute and store functions, programs, and data.

About 3.5 M of user data archive allow you to store data, programs,

ications, or any other variables to a safe location where they cannot

ap be edited or deleted inadvertently. You can also free up RAM by archiving variables to user data. For details, refer to Chapter 18 in the guidebook.

Applications

Some applications are preloaded on your TI-84 Plus C, and others can be installed to customize the TI-84 Plus C to your needs. You can install applications and the TI Co education.ti.com/go/download.

The 3.5 MB archive space lets you stor time on the TI-84 Plus C. Applications can also be stored on a computer for later u guidebook.

se or linked unit-to-unit. For details, refer to Chapter 18 in the

Archiving

You can store variables in the TI-84 Plus C user data archive, a protected area of memory separate from RAM. The user data archive lets you:

nnect™ software at

up to 216 applications at one

• Store data, programs, applications or location where they cannot be edited or deleted inadvertently.

• Create additional free RAM by archiving variables.

By archiving variables that do not need to free up RAM for applications that may require additional memory. For details, refer to: Chapter 18 in the guidebook.

any other variables to a safe

be edited frequently, you can

Other TI-84 Plus C Features

Graphing

You can store, graph in color, and analyze up to 10 functions, up to six parametric functions, up to six polar functions, and up to three sequences. You can use DRAW instructions to annotate graphs in color.

42 Getting Started with the TI-84 Plus C Silver Edition

The graphing chapters appear in this order: Function, Parametric, Polar, Sequence, and DRAW. For graphing details, refer to Chapters 3, 4, 5, 6, and 8 in the guidebook.

Sequences

You can generate sequences and graph them over time. Or, you can graph them as web plots or as phase plots. For details, refer to Chapter 6 in the guidebook.

Tab l es

You can create function evaluation tables to analyze many functions simultaneously. For details, refer to Chapter 7 in the guidebook.

Split Screen

You can split the screen horizontally to display both a graph and a related editor (such as the Y= editor), the table, the stat list editor, or the home screen. Also, you can split the screen vertically to display a graph and its table simultaneously. For details, refer to Chapter 9 in the guidebook.

Matrices

You can enter and save up to 10 matrices and perform standard matrix operations on them. For details, refer to Chapter 10 in the guidebook.

Lists

You can enter and save as many lists as memory allows for use in statistical analyses. You can attach formulas to lists for automatic computation. You can use lists to evaluate expressions at multiple values simultaneously and to graph a family of curves. For details, refer to Chapter 11 in the guidebook.

Statistics

You can perform one- and two-variable, list-based statistical analyses, including logistic and sine regression analysis. You can plot the data as a histogram, xyLine, scatter plot, modified or regular box-and-whisker plot, or normal probability plot. You can define and store up to three stat plot definitions. For details, refer to Chapter 12 in the guidebook.

Inferential Statistics

You can perform 16 hypothesis tests and confidence intervals and 15 distribution functions. You can display hypothesis test results graphically or numerically. For details, refer to Chapter 13 in the guidebook.

Getting Started with the TI-84 Plus C Silver Edition 43

Applications

Press Œ to see the complete list of applications that came with your graphing calculator.

Visit education.ti.com/go/download for additional applications and guidebooks. For details, refer to Chapter 14

in the guidebook.

CATALOG

The CATALOG is a convenient, alphabetical list of all functions and instructions on the TI-84 Plus C. You can paste any function or instruction from the Chapter 15 in the guidebook.

Catalog Help is built into the TI-84 Plu Help contains syntax information for most of the functions in the catalog. To use Catalog Help, select a menu item and then press Ã.

CATALOG to the current cursor location. For details, refer to

C operating system. The Catalog

Programming

You can enter and store programs that include extensive control and input/output instructions. For details, refer to Chapter 16 in the guidebook.

Communication Link

The TI-84 Plus C Silver Edition has a USB port using a USB unit-to-unit cable to connect and communicate with another TI-84 Plus C Silver Edition, TI-84 Plus I/O

port using an I/O unit-to-unit cable to communicate with a TI-84 Plus C Silver Edition, TI-8 TI-83 Plus, TI-83, TI-82, TI-73, CBL 2™, or a CBR 2™ System.

With TI Connect™ software and a USB computer cable, you can also link

-84 Plus C to a personal computer. TI Connect™ software is

the T available as a free downloa

As future software upgrades become avai can download the software to your PC and then use the TI Connect™

tware and a USB computer cable to upgrade your TI-84 Plus C.

sof

For details, refer to Chapter 19

Silver Edition, or TI-84 Plus. The TI-84 Plus C also has an

4 Plus Silver Edition, TI-84 Plus, TI-83 Plus Silver Edition,

d from education.ti.com/go/download.

lable on the TI Web site, you

in the guidebook.

Interchangeable Faceplates

The TI-84 Plus C Silver Edition has interchangeable faceplates that let you customize the appearance of your unit. To purchase additional faceplates, refer to the TI Online Store at education.ti.com.

44 Getting Started with the TI-84 Plus C Silver Edition

Removing a Faceplate

1. Lift the tab at the bottom edge of the faceplate away from the TI-84 Plus C Silver Edition case.

2. Carefully lift the faceplate away from the unit until it releases. Be careful not to damage the faceplate or the keyboard.

Installing New Faceplates

1. Align the top of the faceplate in the corresponding grooves of the TI-84 Plus C Silver Edition case.

2. Gently click the faceplate into place. Do not force.

3. Make sure you gently press each of the grooves to ensure the faceplate is installed properly. See the diagram for proper groove placement.

Battery Information

The TI-84 Plus C graphing calculator comes equipped with a Li-ion rechargeable battery. Like a cell phone or other similar device, charge the battery for at least four hours to ensure optimum performance. The graphing calculator also comes with a USB computer cable for transferring files to and from a computer and for charging the battery.

To check the status of the TI Rechargeable Battery in a TI-84 Plus C

aphi

ng calculator, turn it on. The battery status icon on the upper right

gr of the screen gives information on the battery life.

Getting Started with the TI-84 Plus C Silver Edition 45

The battery icons indicate the level of battery power remaining, and indicate if the battery is charging.

Icon Meaning

Battery is 75% to 100% charged.

Battery is 50% to 75% charged.

Battery is 25% to 50% charged.

Battery is 5% to 25% charged.

Battery is charging.

Warning: RA should back up or archive your variables if your battery power gets low.

Displays this message when

you turn on the unit.

M memory will be

Message A

lost if the battery charge is lost. You

Recharging the TI Rechargeable Battery

You should make sure the TI-84 Plus C battery is charged for classroom use and before exams.

Use one of the following options to charge the batte graph

ing calculator:

ry in the TI-84 Plus C

46 Getting Started with the TI-84 Plus C Silver Edition

• Connect the graphing calculator to a computer using a USB computer cable.

• Connect to a wall outlet using a TI wall adapter (may be sold separately).

• Place the graphing calculator in a TI-84 Plus C Charging Station.

The amount of time required to fully charge the battery may vary, but charging normally takes four to six hours. It is not necessary to remove the TI Rechargeable Battery from the graphing calculator to recharge it. The graphing calculator operates normally while it is attached to a charging source.

To recharge a graphing calculator from a computer, a TI USB driver must be installed. To download TI Connect™ or TI-SmartView™ software that includes a driver, go to education.ti.com/go/download.

When the TI Rechargeable Battery is calculator draws power in the following order:

• First, from a connected external power source, such as:

– A computer

– A TI wall adapter (may be sold separately)

• Second, from the TI Rechargeable Battery

connected through a USB computer cable

fully charged, the graphing

Replacing TI Rechargeable Batteries

Take these precautions when replacing rechargeable batteries:

• Use only the charger recommended for the batt was provided with the original equipment.

• Remove the graphing calculator from the charger or alternating current adapter when not in use or being charged.

• Use of the battery in other devices may result in personal injury or damage to equipment or property.

• There is a risk of explosion if a battery is replaced by the wrong type.

Replacing the Battery

Use only the TI Rechargeable Battery to replace the TI-84 Plus C battery.

To replace the battery, follow these steps.

1. Use a small screwdriver to release the panel from the back of the handheld.

ery, or the one that

Getting Started with the TI-84 Plus C Silver Edition 47

2. Remove the panel.

3. Remove the old battery.

4. Insert the white connector of the new battery into the jack located at the top of the battery compartment.

5. Thread the wire into the case to secure it. Insert the rechargeable battery into its compartment.

48 Getting Started with the TI-84 Plus C Silver Edition

6. Replace the back panel and fasten the screws with a screwdriver.

Disposing of Used Batteries Safely and Properly

Do not mutilate, puncture, or dispose of batteries in fire. The batteries can burst or explode, releasing hazardous chemicals. Discard used batteries according to local regulations.

TI-84 Plus C Charging Station

The TI-84 Plus C Charging Station is used to charge the TI Rechargeable Battery in the TI-84 Plus C Silver Edition graphing calculator.

h slot

The charging station has 10 slots, and eac TI-84 Plus C Silver Edition graphing calculator.

can accommodate a

Note: It is not necessary to fill all the charge batteries.

The charging station is designed to be easy to use and easy to move when needed in a different classroom.

Indentations on each side of the charging stations enable you to lift a ch

arging station using both hands. When you move a charging station to

another location, always use two hands to lift the charging station.

Getting Started with the TI-84 Plus C Silver Edition 49

slots in the charging station to

When the charging station is empty, turn it over and you will notice the bottom is indented. If necessary to ensure the charging station sits flat on a surface, thread the cable through this space.

Place the charging station on a flat, s can also use a wheeled cart if you need to move the charging station from classroom to classroom. When deciding on a location, it is important to consider proximity to a power source such as a power strip or wall outlet.

able surface such as a table. You

Preparing Charging Stations for Use

The TI-84 Plus C Charging Station is shipped with the following components in each package:

• A TI-84 Plus C Charging Station

n AC adapter

•

• A regional power cord adapter

1. Insert the small end of the power adapter cord into the charging station’s power jack.

2. Plug the other end of the adapter into a power outlet.

Inserting Graphing Calculators into the Charging Station

The slots in the TI-84 Plus C Charging Station are designed to accommodate a graphing calculator without a slide case attached. The calculator will not fit in the slots if the slide case is attached.

50 Getting Started with the TI-84 Plus C Silver Edition

The front of the calculator must face the front of the charging station. You may cause damage to the TI-84 Plus C graphing calculator if you try to force it looking at the TI logo on the charging station, calculators are inserted into the slot with the keypad facing left.

into the charging station facing the wrong direction. When

Back of the calculator

Back of the charging station

1. Remove the slide case from the grap

2. Align the grooves on the sides of the graphing calculator with the guides in the charging station slots. Ensure the calculator is facing the proper direction.

3. Gently push the graphing calculator into the slot. You will feel a slight resistance; continue pushing down until the graphing calculator is seated.

When the TI-84 Plus C graphing calculator is properly seated in a slot, the

ght on the side of the calculator turns amber to indicate it is

LED li charging.

hing calculator.

Charging Batteries

The TI-84 Plus C Silver Edition graphing calculator uses a Li Ion TI Rechargeable Battery.

The charging process starts automatically when placed in a slot on a powered charging station. You can charge a classroom set of graphing calculators overnight.

a graphing calculator is

Determining Battery Status

The LED light on each connected graphing calculator in the charging station provides basic information about the status of the rechargeable battery.

• When the light is amber, the battery is charging.

• When the light is green, the battery is fully charged.

Getting Started with the TI-84 Plus C Silver Edition 51

Troubleshooting

If the recharge fails:

• Make sure the graphing calculator is seated pro Batteries are not charged if the connector on the graphing calculator and the connector in the slot are not aligned.

• Check the connector on the graphing calculator to ensure that it is clean. If there is build-up on the graphing calculator’s connector, you can remove it with a clean, dry cloth or a pencil eraser. Never use wet cloths or solutions of any kind.

perly in the slot.

Storing Charging Stations

Store the TI-84 Plus C Charging Station on a flat surface such as a table or a wheeled cart. You cannot damage the charging station by leaving it plugged in for extended periods of time. Also, you cannot damage the batteries by leaving them in the charging station beyond the time needed to fully charge them.

Transferring the OS from calculator to calculator

You can transfer the operating system from one calculator to another using a USB unit-to-unit cable or an I/O unit-to-unit cable (sold separately).

Note: You cannot transfer the OS or files usin Station. The TI-84 Plus C Charging Station only charges the TI-84 Plus C graphing calculators.

Connect the two calculators by firmly insert cable ends into the calculators. The USB and I/O ports are located on the top edge of the calculator.

g the TI-84 Plus C Charging

ing either the USB or I/O

Receiving unit:

y 8 ~ Í

When you press Í, the graphing calculator displays the message Waiting...

52 Getting Started with the TI-84 Plus C Silver Edition

Sending unit:

y 8 } } Í

Error Conditions

Diagnosing an Error

The TI-84 Plus C detects errors while performing these tasks.

• Evaluating an expression

xecuting an instruction

• E

• Plotting a graph

• Storing a value

When the TI-84 Plus C detects an error, it returns an erro short description. Appendix B describes each error type and possible reasons or

hints about the most frequent ways an error occurs.

r message with a

• If you select 1:Quit (or press y 5 or ‘), then the home

screen is displayed.

• If you select cursor at or near the error location.

Note: If a syntax error occurs in the contents of a Y= function during program execution, then the Goto option returns to the Y= editor, not to the program.

2:Goto, then the previous screen is displayed with the

Getting Started with the TI-84 Plus C Silver Edition 53

Correcting an Error

To correct an error, follow these steps.

1. Note the error type (ERROR:error ty

2. Select

3. Determine the error. The error screens give helpful hints about what

4. Correct the expression.

2:Goto, if it is available. The previous screen is displayed with

the cursor at or near the error location.

may have happened, but the errors are not always fully explained. If you cannot recognize the error, refer to Appendix B.

pe).

Linking Compatibility

The TI-84 Plus C has files and variables that may or may not be compatible with the TI-84 Plus family of graphing calculators. The table below is provided as a reference for what you can SEND and RECEIVE.

Note: Not all TI-84 Plus C graphing calculator files are compatible with ot

her TI-84 Plus Family graphing calculator files because of the high resolution of the TI-84 Plus C color screen. In general, numeric files (not limited to lists, variables, matrices, and functions) are shared between these graphing calculators but Apps are not shared between these graphing calculators even if they have the same title. When not compatible, the computer file extensions for the TI-84 Plus C are different from a similar variable from the TI-84 Plus/TI-84 Plus Silver Edition graphing calculators.

File type Link from TI-84 to

TI-84 Plus C?

Operating System No No

Apps No No

Link from TI-84 Plus C

to TI-84?

AppVar* Yes Yes

Programs - TI Basic* Yes Yes

Assembly Programs*

Pictures No No

Background Images N/A No

Group files Yes Yes

User Zoom Yes Yes

54 Getting Started with the TI-84 Plus C Silver Edition

Yes No

String Yes Yes

Tab le Yes Yes

Function file Yes Yes

GDB** Yes Yes

List Yes Yes

Matrix Yes Yes

Number Yes Yes

Complex Yes Yes

Window Setup Yes Yes

Certificate No No

Backup No No

* Programs created using commands available only in the latest OS version will not transfer to graphing calculators with an earlier OS version.

* App Vars and Programs should be reviewed for use after the transfer between the TI-84 Plus Family and TI-84 Plus C graphing calculators. Some App Vars may not set up an App as expected. Some Programs will need to be modified due to the difference in screen resolution and new commands.

** You may receive a version error if you used DOT-THIN line style. Change the line style to avoid the error.

Getting Started with the TI-84 Plus C Silver Edition 55

56 Getting Started with the TI-84 Plus C Silver Edition

Texas Instruments Support and Service

For U.S. and Canada:

For General Information

Home Page: education.ti.com

KnowledgeBase and e-mail inquiries:

Phone: (800) TI-CARES / (800) 842-2737

International information:

education.ti.com/support

For U.S., Canada, Mexico, Puerto Rico, and Virgin Islands only

education.ti.com/international

For Technical Support

For Product (Hardware) Service

Customers in the U.S., Canada, Mexico, Puerto Rico and Virgin Islands: Always contact Texas Instruments Customer Support before

returning a product for service.

For All Other Countries:

For general information

For more information about TI products and se or visit the TI Internet address.

E-mail inquiries: ti-cares@ti.com

Home Page: education.ti.com

rvices, contact TI by e-mail

Service and Warranty Information

For information about the length and terms of the warranty or about product service, refer to the warranty statement enclosed with this product or contact your local Texas Instruments retailer/distributor.

Index

- (negation) 24

Symbols

! Store 31

( ) (parentheses)

a+bi (rectangular complex mode) 20 AC adapters alpha cursor alpha-lock angle modes Ans (last answer) APD (Automatic Power Down) Apps AppVars Archive Automatic Power Down (APD)

50 15

batteries 45

charging status troubleshooting

busy indicator

Y= editor

color on the TI-84 Plus C

complex

modes (a+bi, re^ numbers

contrast (display) cursors

15, 28

qi) 20

decimal mode (float or fixed) 18 Degree angle mode display brightness display cursors Displaying the Clock Settings

E (exponent) 18, 26

edit keys table Eng (engineering notation mode) ENTRY (last entry key) entry cursor EOS (Equation Operating System) Equation Operating System (EOS) errors

diagnosing and correcting

expression

23 23

Catalog Help 27, 44 charge status

LED indicator

charging batteries

troubleshooting charging station classroom use

TI-84 Plus C

TI-Navigator™ Clock

color

DRAW commands

graph format screen

spinner

stat plots

Faceplates 44 Fix (fixed-decimal mode) fixed-decimal mode (Fix) Float (floating-decimal mode) floating-decimal mode (Float) fractions

n/d

Un/d

Full (full-screen mode) full-screen mode (Full)

Func (function graphing mode) function graphing

modes

function, definition of

18 18

20 20

graphing modes 19 graphing-order modes graph-table split-screen mode (G-T)

G-T (graph-table split-screen mode)

home screen 9

scrolling

Horiz (horizontal split-screen mode)

9, 11

implied multiplication 24 insert cursor inserting

calculators in charging station

instruction, definition of

keyboard

layout

Last Entry 34 LED lights

menus 36

scrolling shortcut

mode

Answers Classic MathPrint

mode settings

a+bi (complex rectangular) Degree (angle) Eng (notation) Fix (decimal) Float (decimal) Full (screen) Func (graphing)

37 4, 13

10, 17

G-T (screen) Horiz (screen) Normal (notation) Par/Param (graphing) Pol/Polar (graphing) Radian (angle) re^

i (complex polar) 20

Real Sci (notation) Seq (graphing) Simul (graphing order)

n/d 21 negation (-) Normal notation mode

order of evaluating equations 23

Par/Param (parametric graphing

mode)

parentheses Pol/Polar (polar graphing mode) polar graphing

mode (Pol/Polar)

previous entry (Last Entry)

Radian angle mode 18 RCL (recall) re^

i) (polar complex mode) 20

Real mode rechargeable batteries

Removing a Faceplate

status

troubleshooting

Sci (scientific notation mode) 18 scientific notation screen modes second cursor (2nd) second key (2nd)

Seq (sequence graphing mode) 19 setting

display contrast

modes

modes from a program

Simul (simultaneous graphing order

mode)

spinner

status

LED indicator

rechargeable batteries status bar Store (

!) 31

storing

TI-84 Plus C Charging Stations

variable values

TI Rechargeable Batteries

charging TI-84 Plus C Charging Stations

storing

TI-Navigator™ software and the TI-

84 Plus C troubleshooting

Un/d 21 UnArchive

Statistics String

Table

Window Zoom

Y-VARS menu

Function On/Off

Parametric Polar

variables

complex

displaying and storing values

graph databases

graph pictures

list

matrix

real

recalling values

types

user and system

VARS and Y-VARS menus VARS menu

GDB

Picture

Texas Instruments TI-84 Plus C Getting Started

Specifications and Main Features

Frequently Asked Questions

User Manual

Important Information

Getting Started with the TI-84 Plus C Silver Edition

Documentation Conventions

Using the TI-84 Plus C in the Classroom

Using Color on the TI-84 Plus C

Using Color on the Graph Screen

TI-84 Plus C Keyboard

Keyboard Zones

TI-84 Plus C Silver Edition

Using the Color.Coded Keyboard

Turning On and Turning Off the TI-84 Plus C

Turning On the Graphing Calculator

Turning Off the Graphing Calculator

Setting the Display Brightness

Adjusting the Display Brightness

Automatic Dimming

The Home Screen

Displaying Entries and Answers

Returning to the Home Screen

Status Bar

Using Shortcut Menus

Busy Indicator

Display Cursors

Setting Modes

Checking Mode Settings

Changing Mode Settings

Setting a Mode from a Program

MATHPRINT, CLASSIC

NORMAL, SCI, ENG

FLOAT, 0 1 2 3 4 5 6 7 8 9

RADIAN, DEGREE

FUNCTION, PARAMETRIC, POLAR, SEQ

THICK, DOT-THICK, THIN, DOT-THIN

SEQUENTIAL, SIMUL

REAL, a+bi, re^(qi)

FULL, HORIZONTAL, GRAPH-TABLE

FRACTION TYPE: n/d, Un/d

ANSWERS: AUTO, DEC, FRAC-APPROX

GOTO 2ND FORMAT GRAPH: NO, YES

STAT DIAGNOSTICS: OFF, ON

STAT WIZARDS: ON OFF

SET CLOCK

Using the Clock

Equation Operating System (EOS™)

Order of Evaluation

Implied Multiplication

Parentheses

Negation

Entering Expressions and Instructions

What Is an Expression?

Entering an Expression

Multiple Entries on a Line

Entering a Number in Scientific Notation

Functions

Instructions

Interrupting a Calculation

Pictures and Backgrounds

Using Variable Names

Variables and Defined Items

Notes about Variables

Storing Variable Values

Storing Values in a Variable

Displaying a Variable Value

Archiving Variables (Archive, Unarchive)

Recalling Variable Values

Using Recall (RCL)

QuickPlot and Fit Equation

ENTRY (Last Entry) Storage Area

Using ENTRY (Last Entry)

Clearing ENTRY

Using Ans in an Expression

Continuing an Expression

Storing Answers

Menus

Using Menus

Scrolling a Menu