Ti 84 Plus Calculator

QuickStudy Laminated Reference Guide

Ken Yablonsky

• Publisher: QuickStudy Reference Guides
• Year: 2018
• Print ISBN: 9781423221654
• eBook ISBN: 9781423240761
• Topic: Mathematics
• Subtopic: Mathematics General
• Index: Mathematics

You've just purchased a TI-84 Plus calculator to assist in performing different types of mathematical equations—now, how can you get the most out of it? You'll find the answer to this question with our comprehensive, 6-page guide that shows in great detail what exactly the TI-84 Plus can do. Function key and mode descriptions, as well as problem-solving examples, are included within a color-coded format for easy reference.

Graphs & Functions

When graphing functions, it is important that the mode settings match the type of data being input. To graph a function, set the type of graphing mode of the calculator to Func.

The

Y=

Button

Defining a Function

• To enter a function, use the Y= editor. Press
  Y=
  , use the arrow keys to navigate to the function to define, and then enter the function. NOTE: Functions may contain numbers, variables, operations, matrices, lists, or expressions. The independent variable in defined functions is X. This variable can be entered using the
  Χ, T, Θ, n
  button or by pressing
  ALPHA
  [X].

Evaluating a Function

• To evaluate a function at a given value, first define the function in the Y= editor. Then from the home screen, press
  VARS
  ▶
  1
  and choose the appropriate function. Then enter the value to be evaluated (surrounded by parentheses), and press
  ENTER
  to perform the calculation.

Selecting or Deselecting a Function

• To select or deselect a function, press
  Y=
  . Use the arrow keys to navigate to the function to select or deselect, press
  ◀
  so that the cursor is on the equals sign, and press
  ENTER
  to toggle the selection status.

Changing the Graph Style for a Function

• To change the graph style for a function, press
  Y=
  . Use the arrow keys to navigate to the function to select or deselect, press
  ◀
  ◀
  so that the cursor is on the graph-style icon, and press
  ENTER
  to toggle the graph style. You can change the style to a thicker line, shade above or below the graph, draw a path or animate the graph, or draw the graph in dot mode.

The

WINDOW

Button

Pressing the

WINDOW

button displays the currently displayed graph window. You can manually change the X-minimum, X-maximum, X-scale, Y-minimum, Y-maximum, Y-scale, resolution values, or Δx-values. The resolutions must be between 1 and 8. EX: An Xres of 5 evaluates the function for every fifth pixel along the x-axis.

The

GRAPH

Button

Pressing the

GRAPH

button displays any functions that are selected from the Y= editor. You can zoom in on parts of the graph or change viewing windows manually or by using preset values. More information about changing how a graph is displayed can be found in The

WINDOW

Button and The

ZOOM

Button sections of this guide. EX: The graph of y = 0.5x³ + 1 is shown in the following screen shot of the ZStandard

ZOOM

option.

The

TRACE

Button

Pressing the

TRACE

button places a cursor on a function that is selected from the Y= editor. You can use the left and right arrow keys to move along the graph. Data values are shown at the bottom of the screen. If more than one function is displayed, the up and down arrows move the cursor to another function. The current function is indicated at the upper-left part of the screen.

The

ZOOM

Button

Pressing the

ZOOM

button opens the zoom menu.

Zbox

• To define a viewing window using Zbox, press
  ZOOM
  1
  . Move the cursor to a corner of the box you want to display. Press
  ENTER
  . Use the arrow keys to move the cursor to the opposite corner. Pressing
  ENTER
  will redraw the graph so that it fits in the box you drew.

Zoom In & Zoom Out

• To zoom in on or out from a graph, press
  ZOOM
  2
  or
  3
  . Press
  ENTER
  . The graph will zoom in or out by a factor of XFact and YFact (which are both stored in the memory and can be adjusted in the zoom memory menu).

ZDecimal

• Pressing
  ZOOM
  4
  reconfigures the viewing window to an Xmin of –4.7, Xmax of 4.7, Ymin of –3.1, Ymax of 3.1, and scales of 1. This preset also changes ΔX and ΔY to 0.1.

ZSquare

• Pressing
  ZOOM
  5
  reconfigures the viewing window so that ΔX and ΔY are the same value.

ZStandard

• Pressing
  ZOOM
  6
  reconfigures the viewing window to an Xmin of –10, Xmax of 10, Ymin of –10, Ymax of 10, and scales and resolution of 1.

ZTrig

• Pressing
  ZOOM
  7
  reconfigures the viewing window to an Xmin of –6.152285613 (–47π/24), Xmax of 6.152285613 (47π/24), Ymin of –4, Ymax of 4, Xscl of 1.5707963267949 (π/2), and Yscl of 1.

ZInteger

• Pressing
  ZOO...

Table of contents

• Overview of Keys
• General Info & Basics
• Basic Calculations
• The MATH Menu
• The MATH NUM Menu
• The MATH CPX Menu
• The MATH PRB Menu
• The TEST Menu
• The ANGLE Menu
• The DRAW Menu
• The MATRIX Menu
• The LIST Menus
• The STAT Menus
• The DISTR Menu
• Graphs & Functions
• Using Applications
• Using Programs
• Using the Link Command
• Menu Shortcuts