- •Important Information
- •Chapter 1: Operating the TI-84 Plus Silver Edition
- •Documentation Conventions
- •TI-84 Plus Keyboard
- •Keyboard Zones
- •TI-84 Plus
- •Using the Color.Coded Keyboard
- •Turning On and Turning Off the TI-84 Plus
- •Turning On the Graphing Calculator
- •Turning Off the Graphing Calculator
- •Batteries
- •Setting the Display Contrast
- •Adjusting the Display Contrast
- •When to Replace Batteries
- •The Display
- •Types of Displays
- •Home Screen
- •Displaying Entries and Answers
- •Returning to the Home Screen
- •Busy Indicator
- •Display Cursors
- •Interchangeable Faceplates
- •Removing a Faceplate
- •Installing New Faceplates
- •Using the Clock
- •Displaying the Clock Settings
- •Changing the Clock settings
- •Error Messages
- •Turning the Clock On
- •Turning the Clock Off
- •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
- •TI-84 Plus Edit Keys
- •Setting Modes
- •Checking Mode Settings
- •Changing Mode Settings
- •Setting a Mode from a Program
- •Normal, Sci, Eng
- •Float, 0123456789
- •Radian, Degree
- •Func, Par, Pol, Seq
- •Connected, Dot
- •Sequential, Simul
- •Real, a+bi, re^qi
- •Full, Horiz, G-T
- •Set Clock
- •Using TI-84 Plus 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)
- •ENTRY (Last Entry) Storage Area
- •Using ENTRY (Last Entry)
- •Accessing a Previous Entry
- •Reexecuting the Previous Entry
- •Multiple Entry Values on a Line
- •Clearing ENTRY
- •Using Ans in an Expression
- •Continuing an Expression
- •Storing Answers
- •TI-84 Plus Menus
- •Using a TI-84 Plus Menu
- •Displaying a Menu
- •Moving from One Menu to Another
- •Scrolling a Menu
- •Selecting an Item from a Menu
- •Leaving a Menu without Making a Selection
- •VARS and VARS Y-VARS Menus
- •VARS Menu
- •Selecting a Variable from the VARS Menu or VARS Y-VARS Menu
- •Equation Operating System (EOS™)
- •Order of Evaluation
- •Implied Multiplication
- •Parentheses
- •Negation
- •Special Features of the TI-84 Plus
- •1.5 Megabytes (M) of Available Memory
- •Applications
- •Archiving
- •Other TI-84 Plus Features
- •Graphing
- •Sequences
- •Tables
- •Split Screen
- •Matrices
- •Lists
- •Statistics
- •Inferential Statistics
- •Applications
- •CATALOG
- •Programming
- •Archiving
- •Communication Link
- •Error Conditions
- •Diagnosing an Error
- •Correcting an Error
- •Chapter 2: Math, Angle, and Test Operations
- •Getting Started: Coin Flip
- •Keyboard Math Operations
- •Using Lists with Math Operations
- •Addition, Subtraction, Multiplication, Division
- •Trigonometric Functions
- •Power, Square, Square Root
- •Inverse
- •Exponential
- •Constant
- •Negation
- •MATH Operations
- •MATH Menu
- •4Frac, 4Dec
- •Cube, Cube Root
- •fMin(, fMax(
- •nDeriv(
- •fnInt(
- •Using the Equation Solver
- •Solver
- •Entering an Expression in the Equation Solver
- •Entering and Editing Variable Values
- •Solving for a Variable in the Equation Solver
- •Editing an Equation Stored to eqn
- •Equations with Multiple Roots
- •Further Solutions
- •Controlling the Solution for Solver or solve(
- •Using solve( on the Home Screen or from a Program
- •MATH NUM (Number) Operations
- •MATH NUM Menu
- •round(
- •iPart(, fPart(
- •Entering and Using Complex Numbers
- •Complex-Number Modes
- •Entering Complex Numbers
- •Note about Radian Versus Degree Mode
- •Interpreting Complex Results
- •Rectangular-Complex Mode
- •Polar-Complex Mode
- •MATH CPX (Complex) Operations
- •MATH CPX Menu
- •conj(
- •real(
- •imag(
- •angle(
- •4Rect
- •4Polar
- •MATH PRB (Probability) Operations
- •MATH PRB Menu
- •rand
- •Factorial
- •randInt(
- •randNorm(
- •randBin(
- •ANGLE Operations
- •ANGLE Menu
- •Entry Notation
- •Degree
- •Radians
- •TEST (Relational) Operations
- •TEST Menu
- •Using Tests
- •TEST LOGIC (Boolean) Operations
- •TEST LOGIC Menu
- •Boolean Operators
- •Using Boolean Operations
- •Chapter 3: Function Graphing
- •Getting Started: Graphing a Circle
- •Defining Graphs
- •Defining a Graph
- •Displaying and Exploring a Graph
- •Saving a Graph for Later Use
- •Setting the Graph Modes
- •Checking and Changing the Graphing Mode
- •Setting Modes from a Program
- •Defining Functions
- •Displaying Functions in the Y= Editor
- •Defining or Editing a Function
- •Defining a Function from the Home Screen or a Program
- •Evaluating Y= Functions in Expressions
- •Selecting and Deselecting Functions
- •Selecting and Deselecting a Function
- •Turning On or Turning Off a Stat Plot in the Y= Editor
- •Selecting and Deselecting Functions from the Home Screen or a Program
- •Setting Graph Styles for Functions
- •MATH Graph Style Icons in the Y= Editor
- •Setting the Graph Style
- •Shading Above and Below
- •Setting a Graph Style from a Program
- •Setting the Viewing Window Variables
- •The TI-84 Plus Viewing Window
- •Displaying the Window Variables
- •Changing a Window Variable Value
- •Storing to a Window Variable from the Home Screen or a Program
- •Setting the Graph Format
- •Displaying the Format Settings
- •Changing a Format Setting
- •RectGC, PolarGC
- •CoordOn, CoordOff
- •GridOff, GridOn
- •AxesOn, AxesOff
- •LabelOff, LabelOn
- •ExprOn, ExprOff
- •Displaying Graphs
- •Displaying a New Graph
- •Pausing or Stopping a Graph
- •Smart Graph
- •Overlaying Functions on a Graph
- •Graphing a Family of Curves
- •Exploring Graphs with the Free-Moving Cursor
- •Free-Moving Cursor
- •Graphing Accuracy
- •Exploring Graphs with TRACE
- •Beginning a Trace
- •Moving the Trace Cursor
- •Moving the Trace Cursor from Function to Function
- •Moving the Trace Cursor to Any Valid X Value
- •Panning to the Left or Right
- •Quick Zoom
- •Leaving and Returning to TRACE
- •Using TRACE in a Program
- •Exploring Graphs with the ZOOM Instructions
- •ZOOM Menu
- •Zoom Cursor
- •ZBox
- •Zoom In, Zoom Out
- •ZDecimal
- •ZSquare
- •ZStandard
- •ZTrig
- •ZInteger
- •ZoomStat
- •ZoomFit
- •Using ZOOM MEMORY
- •ZOOM MEMORY Menu
- •ZPrevious
- •ZoomSto
- •ZoomRcl
- •ZOOM FACTORS
- •Checking XFact and YFact
- •Changing XFact and YFact
- •Using ZOOM MEMORY Menu Items from the Home Screen or a Program
- •Using the CALC (Calculate) Operations
- •CALCULATE Menu
- •value
- •zero
- •minimum, maximum
- •intersect
- •Chapter 4: Parametric Graphing
- •Getting Started: Path of a Ball
- •Defining and Displaying Parametric Graphs
- •TI-84 Plus Graphing Mode Similarities
- •Setting Parametric Graphing Mode
- •Displaying the Parametric Y= Editor
- •Selecting a Graph Style
- •Defining and Editing Parametric Equations
- •Selecting and Deselecting Parametric Equations
- •Setting Window Variables
- •Setting the Graph Format
- •Displaying a Graph
- •Window Variables and Y.VARS Menus
- •Exploring Parametric Graphs
- •Free-Moving Cursor
- •TRACE
- •Moving the Trace Cursor to Any Valid T Value
- •ZOOM
- •CALC
- •Chapter 5: Polar Graphing
- •Getting Started: Polar Rose
- •Defining and Displaying Polar Graphs
- •TI-84 Plus Graphing Mode Similarities
- •Setting Polar Graphing Mode
- •Displaying the Polar Y= Editor
- •Selecting Graph Styles
- •Defining and Editing Polar Equations
- •Selecting and Deselecting Polar Equations
- •Setting Window Variables
- •Setting the Graph Format
- •Displaying a Graph
- •Window Variables and Y.VARS Menus
- •Exploring Polar Graphs
- •Free-Moving Cursor
- •TRACE
- •Moving the Trace Cursor to Any Valid Theta Value
- •ZOOM
- •CALC
- •Chapter 6: Sequence Graphing
- •Getting Started: Forest and Trees
- •Defining and Displaying Sequence Graphs
- •TI-84 Plus Graphing Mode Similarities
- •Setting Sequence Graphing Mode
- •TI-84 Plus Sequence Functions u, v, and w
- •Displaying the Sequence Y= Editor
- •Selecting Graph Styles
- •Selecting and Deselecting Sequence Functions
- •Defining and Editing a Sequence Function
- •Nonrecursive Sequences
- •Recursive Sequences
- •Setting Window Variables
- •Selecting Axes Combinations
- •Setting the Graph Format
- •Setting Axes Format
- •Displaying a Sequence Graph
- •Exploring Sequence Graphs
- •Free-Moving Cursor
- •TRACE
- •Moving the Trace Cursor to Any Valid n Value
- •ZOOM
- •CALC
- •Evaluating u, v, and w
- •Graphing Web Plots
- •Graphing a Web Plot
- •Valid Functions for Web Plots
- •Displaying the Graph Screen
- •Drawing the Web
- •Using Web Plots to Illustrate Convergence
- •Example: Convergence
- •Graphing Phase Plots
- •Graphing with uv, vw, and uw
- •Example: Predator-Prey Model
- •Comparing TI-84 Plus and TI-82 Sequence Variables
- •Sequences and Window Variables
- •Sequence Keystroke Changes
- •Chapter 7: Tables
- •Getting Started: Roots of a Function
- •Setting Up the Table
- •TABLE SETUP Screen
- •TblStart, @Tbl
- •Indpnt: Auto, Indpnt: Ask, Depend: Auto, Depend: Ask
- •Setting Up the Table from the Home Screen or a Program
- •Defining the Dependent Variables
- •Defining Dependent Variables from the Y= Editor
- •Editing Dependent Variables from the Table Editor
- •Displaying the Table
- •The Table
- •Independent and Dependent Variables
- •Clearing the Table from the Home Screen or a Program
- •Scrolling Independent-Variable Values
- •Displaying Other Dependent Variables
- •Chapter 8: Draw Instructions
- •Getting Started: Drawing a Tangent Line
- •Using the DRAW Menu
- •DRAW Menu
- •Before Drawing on a Graph
- •Drawing on a Graph
- •Clearing Drawings
- •Clearing Drawings When a Graph Is Displayed
- •Clearing Drawings from the Home Screen or a Program
- •Drawing Line Segments
- •Drawing a Line Segment Directly on a Graph
- •Drawing a Line Segment from the Home Screen or a Program
- •Drawing Horizontal and Vertical Lines
- •Drawing a Line Directly on a Graph
- •Drawing a Line from the Home Screen or a Program
- •Drawing Tangent Lines
- •Drawing a Tangent Line Directly on a Graph
- •Drawing a Tangent Line from the Home Screen or a Program
- •Drawing Functions and Inverses
- •Drawing a Function
- •Drawing an Inverse of a Function
- •Shading Areas on a Graph
- •Shading a Graph
- •Drawing Circles
- •Drawing a Circle Directly on a Graph
- •Drawing a Circle from the Home Screen or a Program
- •Placing Text on a Graph
- •Placing Text Directly on a Graph
- •Placing Text on a Graph from the Home Screen or a Program
- •Split Screen
- •Using Pen to Draw on a Graph
- •Using Pen to Draw on a Graph
- •Drawing Points on a Graph
- •DRAW POINTS Menu
- •Drawing Points Directly on a Graph with Pt-On(
- •Erasing Points with Pt-Off(
- •Changing Points with Pt-Change(
- •Drawing Points from the Home Screen or a Program
- •Drawing Pixels
- •TI-84 Plus Pixels
- •Turning On and Off Pixels with Pxl-On( and Pxl-Off(
- •Using pxl-Test(
- •Split Screen
- •Storing Graph Pictures (Pic)
- •DRAW STO Menu
- •Storing a Graph Picture
- •Recalling Graph Pictures (Pic)
- •Recalling a Graph Picture
- •Deleting a Graph Picture
- •Storing Graph Databases (GDB)
- •What Is a Graph Database?
- •Storing a Graph Database
- •Recalling Graph Databases (GDB)
- •Recalling a Graph Database
- •Deleting a Graph Database
- •Chapter 9: Split Screen
- •Getting Started: Exploring the Unit Circle
- •Using Split Screen
- •Setting a Split-Screen Mode
- •Horiz (Horizontal) Split Screen
- •Horiz Mode
- •Moving from Half to Half in Horiz Mode
- •Full Screens in Horiz Mode
- •G-T Mode
- •Moving from Half to Half in G-T Mode
- •Using TRACE in G-T Mode
- •Full Screens in G-T Mode
- •TI-84 Plus Pixels in Horiz and G-T Modes
- •TI-84 Plus Pixels in Horiz and G-T Modes
- •DRAW POINTS Menu Pixel Instructions
- •DRAW Menu Text( Instruction
- •PRGM I/O Menu Output( Instruction
- •Setting a Split-Screen Mode from the Home Screen or a Program
- •Chapter 10: Matrices
- •Getting Started: Systems of Linear Equations
- •Defining a Matrix
- •What Is a Matrix?
- •Selecting a Matrix
- •Accepting or Changing Matrix Dimensions
- •Viewing and Editing Matrix Elements
- •Displaying Matrix Elements
- •Deleting a Matrix
- •Viewing a Matrix
- •Viewing-Context Keys
- •Editing a Matrix Element
- •Editing-Context Keys
- •Using Matrices with Expressions
- •Using a Matrix in an Expression
- •Entering a Matrix in an Expression
- •Displaying and Copying Matrices
- •Displaying a Matrix
- •Copying One Matrix to Another
- •Accessing a Matrix Element
- •Using Math Functions with Matrices
- •Using Math Functions with Matrices
- •Addition, Subtraction, Multiplication
- •Negation
- •round(
- •Inverse
- •Powers
- •Relational Operations
- •iPart(, fPart(, int(
- •Using the MATRX MATH Operations
- •MATRX MATH Menu
- •Transpose
- •Accessing Matrix Dimensions with dim(
- •Creating a Matrix with dim(
- •Redimensioning a Matrix with dim(
- •Fill(
- •identity(
- •randM(
- •augment(
- •Matr4list(
- •List4matr(
- •cumSum(
- •Row Operations
- •ref(, rref(
- •rowSwap(
- •Chapter 11: Lists
- •Getting Started: Generating a Sequence
- •Naming Lists
- •Using TI-84 Plus List Names L1 through L6
- •Creating a List Name on the Home Screen
- •Storing and Displaying Lists
- •Storing Elements to a List
- •Displaying a List on the Home Screen
- •Copying One List to Another
- •Accessing a List Element
- •Deleting a List from Memory
- •Using Lists in Graphing
- •Entering List Names
- •Using the LIST NAMES Menu
- •Entering a User-Created List Name Directly
- •Attaching Formulas to List Names
- •Attaching a Formula to a List Name
- •Attaching a Formula to a List on the Home Screen or in a Program
- •Detaching a Formula from a List
- •Using Lists in Expressions
- •Using a List in an Expression
- •Using Lists with Math Functions
- •LIST OPS Menu
- •LIST OPS Menu
- •SortA(, SortD(
- •Using dim( to Find List Dimensions
- •Using dim( to Create a List
- •Using dim( to Redimension a List
- •Fill(
- •cumSum(
- •@List(
- •Select(
- •Before Using Select(
- •Using Select( to Select Data Points from a Plot
- •augment(
- •List4matr(
- •Matr4list(
- •LIST MATH Menu
- •LIST MATH Menu
- •mean(, median(
- •sum(, prod(
- •Sums and Products of Numeric Sequences
- •stdDev(, variance(
- •Chapter 12: Statistics
- •Getting Started: Pendulum Lengths and Periods
- •Setting Up Statistical Analyses
- •Using Lists to Store Data
- •Setting Up a Statistical Analysis
- •Displaying the Stat List Editor
- •Using the Stat List Editor
- •Entering a List Name in the Stat List Editor
- •Creating a Name in the Stat List Editor
- •Removing a List from the Stat List Editor
- •Removing All Lists and Restoring L1 through L6
- •Clearing All Elements from a List
- •Editing a List Element
- •Attaching Formulas to List Names
- •Attaching a Formula to a List Name in Stat List Editor
- •Using the Stat List Editor When Formula-Generated Lists Are Displayed
- •Handling Errors Resulting from Attached Formulas
- •Detaching Formulas from List Names
- •Detaching a Formula from a List Name
- •Editing an Element of a Formula-Generated List
- •Switching Stat List Editor Contexts
- •Stat List Editor Contexts
- •Stat List Editor Contexts
- •View-Elements Context
- •Edit-Elements Context
- •View-Names Context
- •Enter-Name Context
- •STAT EDIT Menu
- •STAT EDIT Menu
- •SortA(, SortD(
- •ClrList
- •SetUpEditor
- •Restoring L1 through L6 to the Stat List Editor
- •Regression Model Features
- •Regression Model Features
- •Automatic Residual List
- •Automatic Regression Equation
- •Diagnostics Display Mode
- •STAT CALC Menu
- •STAT CALC Menu
- •Frequency of Occurrence for Data Points
- •1-Var Stats
- •2-Var Stats
- •LinReg (ax+b)
- •QuadReg (ax2+bx+c)
- •SinReg Example: Daylight Hours in Alaska for One Year
- •Manual Linear Fit
- •Statistical Variables
- •Statistical Analysis in a Program
- •Entering Stat Data
- •Statistical Calculations
- •Statistical Plotting
- •Steps for Plotting Statistical Data in Lists
- •Scatter
- •xyLine
- •Histogram
- •ModBoxplot
- •Boxplot
- •NormProbPlot
- •Defining the Plots
- •Displaying Other Stat Plot Editors
- •Turning On and Turning Off Stat Plots
- •Defining the Viewing Window
- •Tracing a Stat Plot
- •Statistical Plotting in a Program
- •Defining a Stat Plot in a Program
- •Displaying a Stat Plot from a Program
- •Chapter 13: Inferential Statistics and Distributions
- •Getting Started: Mean Height of a Population
- •Height (in centimeters) of Each of 10 Women
- •Inferential Stat Editors
- •Displaying the Inferential Stat Editors
- •Using an Inferential Stat Editor
- •Selecting Data or Stats
- •Entering the Values for Arguments
- •Selecting the Pooled Option
- •Selecting Calculate or Draw for a Hypothesis Test
- •Selecting Calculate for a Confidence Interval
- •Bypassing the Inferential Stat Editors
- •STAT TESTS Menu
- •STAT TESTS Menu
- •Inferential Stat Editors for the STAT TESTS Instructions
- •Z-Test
- •T-Test
- •2-SampZTest
- •2-SampTTest
- •1-PropZTest
- •2-PropZTest
- •ZInterval
- •TInterval
- •2-SampZInt
- •2-SampTInt
- •1-PropZInt
- •2-PropZInt
- •c2-Test
- •c2GOF-Test
- •2-SampFTest
- •LinRegTTest
- •LinRegTInt
- •ANOVA(
- •Inferential Statistics Input Descriptions
- •Test and Interval Output Variables
- •Distribution Functions
- •DISTR menu
- •normalpdf(
- •normalcdf(
- •invNorm(
- •invT(
- •tpdf(
- •tcdf(
- •Fpdf(
- •Fcdf(
- •binompdf
- •binomcdf(
- •poissonpdf(
- •poissoncdf(
- •geometpdf(
- •geometcdf(
- •Distribution Shading
- •DISTR DRAW Menu
- •ShadeNorm(
- •Shade_t(
- •Shadec2(
- •ShadeF(
- •Chapter 14: Applications
- •The Applications Menu
- •Steps for Running the Finance Application
- •Getting Started: Financing a Car
- •Getting Started: Computing Compound Interest
- •Using the TVM Solver
- •Using the TVM Solver
- •Using the Financial Functions
- •Entering Cash Inflows and Cash Outflows
- •FINANCE CALC Menu
- •TVM Solver
- •Calculating Time Value of Money (TVM)
- •Calculating Time Value of Money
- •Calculating Cash Flows
- •Calculating a Cash Flow
- •Calculating Amortization
- •Calculating an Amortization Schedule
- •GPrn(, GInt(
- •Amortization Example: Calculating an Outstanding Loan Balance
- •Calculating Interest Conversion
- •Calculating an Interest Conversion
- •Finding Days between Dates/Defining Payment Method
- •Defining the Payment Method
- •Using the TVM Variables
- •FINANCE VARS Menu
- •The EasyData App
- •Steps for Running the EasyData App
- •EasyData Settings
- •Starting and Stopping Data Collection
- •Saving Collected Data
- •Chapter 15: CATALOG, Strings, Hyperbolic Functions
- •Browsing the TI-84 Plus CATALOG
- •What Is the CATALOG?
- •Selecting an Item from the CATALOG
- •Entering and Using Strings
- •What Is a String?
- •Entering a String
- •Storing Strings to String Variables
- •String Variables
- •Storing a String to a String Variable
- •Displaying the Contents of a String Variable
- •String Functions and Instructions in the CATALOG
- •Displaying String Functions and Instructions in the CATALOG
- •Concatenation
- •Selecting a String Function from the CATALOG
- •Equ4String(
- •expr(
- •inString(
- •length(
- •String4Equ(
- •Entering a Function to Graph during Program Execution
- •Hyperbolic Functions in the CATALOG
- •Hyperbolic Functions
- •sinh(, cosh(, tanh(
- •Chapter 16: Programming
- •Getting Started: Volume of a Cylinder
- •Creating and Deleting Programs
- •What Is a Program?
- •Creating a New Program
- •Managing Memory and Deleting a Program
- •Entering Command Lines and Executing Programs
- •Entering a Program Command Line
- •Executing a Program
- •Breaking a Program
- •Editing Programs
- •Editing a Program
- •Inserting and Deleting Command Lines
- •Copying and Renaming Programs
- •Copying and Renaming a Program
- •Scrolling the PRGM EXEC and PRGM EDIT Menus
- •PRGM CTL (Control) Instructions
- •PRGM CTL Menu
- •Controlling Program Flow
- •If-Then
- •If-Then-Else
- •While
- •Repeat
- •Pause
- •Lbl, Goto
- •Menu(
- •prgm
- •Return
- •Stop
- •DelVar
- •GraphStyle(
- •PRGM I/O (Input/Output) Instructions
- •PRGM I/O Menu
- •Displaying a Graph with Input
- •Storing a Variable Value with Input
- •Prompt
- •Displaying the Home Screen
- •Displaying Values and Messages
- •DispGraph
- •DispTable
- •Output(
- •getKey
- •TI-84 Plus Key Code Diagram
- •ClrHome, ClrTable
- •GetCalc(
- •Get(, Send(
- •Calling Other Programs as Subroutines
- •Calling a Program from Another Program
- •Notes about Calling Programs
- •Running an Assembly Language Program
- •Chapter 17: Activities
- •The Quadratic Formula
- •Entering a Calculation
- •Converting to a Fraction
- •Displaying Complex Results
- •Box with Lid
- •Defining a Function
- •Defining a Table of Values
- •Zooming In on the Table
- •Setting the Viewing Window
- •Displaying and Tracing the Graph
- •Zooming In on the Graph
- •Finding the Calculated Maximum
- •Comparing Test Results Using Box Plots
- •Problem
- •Procedure
- •Graphing Piecewise Functions
- •Problem
- •Procedure
- •Graphing Inequalities
- •Problem
- •Procedure
- •Solving a System of Nonlinear Equations
- •Problem
- •Procedure
- •Using a Program to Create the Sierpinski Triangle
- •Setting up the Program
- •Program
- •Graphing Cobweb Attractors
- •Problem
- •Procedure
- •Using a Program to Guess the Coefficients
- •Setting Up the Program
- •Program
- •Graphing the Unit Circle and Trigonometric Curves
- •Problem
- •Procedure
- •Finding the Area between Curves
- •Problem
- •Procedure
- •Using Parametric Equations: Ferris Wheel Problem
- •Problem
- •Procedure
- •Problem 1
- •Procedure 1
- •Problem 2
- •Procedure 2
- •Computing Areas of Regular N-Sided Polygons
- •Problem
- •Procedure
- •Computing and Graphing Mortgage Payments
- •Problem
- •Procedure
- •Chapter 18: Memory and Variable Management
- •Checking Available Memory
- •MEMORY Menu
- •Available RAM, Archive, and App Slots
- •Displaying the About Screen
- •Displaying the MEMORY MANAGEMENT/DELETE Menu
- •Deleting Items from Memory
- •Deleting an Item
- •Clearing Entries and List Elements
- •Clear Entries
- •ClrAllLists
- •Archiving and UnArchiving Variables
- •Archiving and UnArchiving Variables
- •Resetting the TI-84 Plus
- •RAM ARCHIVE ALL Menu
- •Displaying the RAM ARCHIVE ALL Menu
- •Resetting RAM Memory
- •Resetting Archive Memory
- •Resetting All Memory
- •Grouping and Ungrouping Variables
- •Grouping Variables
- •Ungrouping Variables
- •DuplicateName Menu
- •Notes about Menu Items:
- •Garbage Collection
- •Garbage Collection Message
- •Responding to the Garbage Collection Message
- •Why Is Garbage Collection Necessary?
- •How Unarchiving a Variable Affects the Process
- •If the MEMORY Screen Shows Enough Free Space
- •The Garbage Collection Process
- •Using the GarbageCollect Command
- •ERR:ARCHIVE FULL Message
- •Chapter 19: Communication Link
- •Getting Started: Sending Variables
- •TI-84 Plus LINK
- •Connecting Two Graphing Calculators with a USB Unit-to-Unit Cable or an I/O Unit-to-Unit Cable
- •Linking to the CBL/CBR System
- •Linking to a Computer
- •Selecting Items to Send
- •LINK SEND Menu
- •Sending the Selected Items
- •Sending to a TI-84 Plus Silver Edition or TI-84 Plus
- •Sending to a TI-83 Plus or TI-83 Plus Silver Edition
- •Receiving Items
- •LINK RECEIVE Menu
- •Receiving Unit
- •DuplicateName Menu
- •Receiving from a TI-84 Plus Silver Edition or TI-84 Plus
- •Receiving from a TI-83 Plus Silver Edition or TI-83 Plus
- •Receiving from a TI-83
- •Backing Up RAM Memory
- •Memory Backup Complete
- •Error Conditions
- •Insufficient Memory in Receiving Unit
- •Appendix A: Functions and Instructions
- •Appendix B: Reference Information
- •Variables
- •User Variables
- •Archive Variables
- •System Variables
- •Statistics Formulas
- •Logistic
- •SinReg
- •ANOVA(
- •2-SampFTest
- •2-SampTTest
- •Financial Formulas
- •Time Value of Money
- •Amortization
- •Cash Flow
- •Interest Rate Conversions
- •Days between Dates
- •Important Things You Need to Know About Your TI-84 Plus
- •TI-84 Plus Results
- •ERR:DIM MISMATCH Error
- •ERR:INVALID DIM Error
- •Contrast Feature
- •TI-84 Plus Identification Code
- •Backups
- •Apps
- •TI-Cares KnowledgeBase
- •Error Conditions
- •Accuracy Information
- •Computational Accuracy
- •Function Limits
- •Function Results
- •Appendix C: Service and Warranty Information
- •Texas Instruments Support and Service
- •For general information
- •For technical support
- •For product (hardware) service
- •Texas Instruments (TI) Warranty Information
- •Customers in the U.S. and Canada Only
- •Australia & New Zealand Customers only
- •All Other Customers
- •Battery Information
- •When to Replace the Batteries
- •Effects of Replacing the Batteries
- •Battery Precautions
- •Replacing the Batteries
- •In Case of Difficulty
- •Handling a Difficulty
- •Index
- •Symbols
- •Numerics

Guidebook

## Important Information

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

© 2005 Texas Instruments Incorporated

Windows and Macintosh are trademarks of their respective owners.

ii

USA FCC Information Concerning Radio Frequency

Interference

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 to 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.

iii

Chapter 1:

Operating the

### Documentation Conventions

In the body of this guidebook,

All the instructions and examples in this guidebook also work for the

TI-84 Plus 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.

Editing — Editing keys allow you to edit expressions and values.

Advanced — Advanced function keys display menus that access the advanced functions.

## Chapter 1: Operating the | 1 |

Scientific — Scientific calculator keys access the capabilities of a standard scientific calculator.

TI-84 Plus

Graphing Keys

Editing Keys

Advanced

Function Keys

Scientific

Calculator Keys

Chapter 1: Operating the | 2 |

#### Using the Color.Coded Keyboard

The keys on the

The light colored keys are the number keys. The light gray keys along the right side of the keyboard are the common math functions. The light gray keys across the top set up and display graphs. The Œkey with the purple lettering provides access to applications such as the Inequality Graphing application.

The primary function of each key is printed on the keys. For example, when you press, the MATH menu is displayed.

Using the y andƒ Keys

The secondary function of each key is printed in blue above the key. When you press the blue ykey, the character, abbreviation, or word printed in blue above the other keys becomes active for the next keystroke. For example, when you pressyand then

, the TEST menu is displayed. This guidebook describes this keystroke combination asy:.

The alpha function of each key is printed in green above the key. When you press the green ƒ key, the alpha character printed in green above the other keys becomes active for the next keystroke. For example, when you pressƒand then , the letterA is entered. This guidebook describes this keystroke combination asƒ [A].

Chapter 1: Operating the | 3 |

The ykey accesses the second function printed in blue above each key.

The ƒkey accesses the alpha

function printed in green above each

key.

### Turning On and Turning Off the TI-84 Plus

#### Turning On the Graphing Calculator

To turn on the

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

Chapter 1: Operating the | 4 |

•If Automatic Power Down™ (APD™) had previously turned off the graphing calculator, the

•If the

To prolong the life of the batteries, APD turns off the

#### Turning Off the Graphing Calculator

To turn off the

•All settings and memory contents are retained by Constant Memory™.

•Any error condition is cleared.

#### Batteries

The

Chapter 1: Operating the | 5 |

### Setting the Display Contrast

#### Adjusting the Display Contrast

You can adjust the display contrast to suit your viewing angle and lighting conditions. As you change the contrast setting, a number from 0 (lightest) to 9 (darkest) in the

Note: The

The

To adjust the contrast, follow these steps.

1.Press and release the ykey.

2.Press and hold †or}, which are below and above the contrast symbol (blue, halfshaded circle).

•†lightens the screen.

•}darkens the screen.

Note: If you adjust the contrast setting to 0, the display may become completely blank. To restore the screen, press and releasey, and then press and hold} until the display reappears.

Chapter 1: Operating the | 6 |

#### When to Replace Batteries

When the batteries are low, a

To replace the batteries without losing any information in memory, follow the steps in Appendix C.

Generally, the graphing calculator will continue to operate for one or two weeks after the

Note: The operating period following the first

### The Display

#### Types of Displays

The

#### Home Screen

The home screen is the primary screen of the

Chapter 1: Operating the | 7 |