TI 84+ Quick Reference

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Getting Started Using Your TI-84 Plus Silver EditionTI-84 Plus Silver Edition Edit KeysKeystroke Result~ or | Moves the cursor within an expression.} or Ü Moves the cursor from line to line within an expression thatoccupies more than one line. On the top line of an expressionon the home screen, } moves the cursor to the beginning ofthe expression. On the bottom line, Ü moves the cursor tothe end of the expression.y| Moves the cursor to the beginning of an expression.y~ Moves the cursor to the end of an expression.Õ Executes an instruction and/or an expression.ë On a line with text on the home screen, clears the current line.On a blank line on the home screen, clears everything on thehome screen. In an editor, clears the expression or valuewhere the cursor is located.{ Deletes a character at the cursor.y 6 Changes the cursor to an underline (__) and inserts charactersin front of the underline cursor; to end insertion, pressy6,or press |}~or Ü.y Changes the cursor to ; the next keystroke performs a2nd operation (in blue above a key); to cancel 2nd,press y again.É Changes the cursor to ÿ; the next keystroke pastes an alphacharacter (in green above a key); to cancel É pressÉ again, or press |}~or Ü.y7 Changes the cursor to ÿ; sets alpha-lock; subsequentkeystrokes paste alpha characters; to cancel alpha-lock, pressÉ. If you are prompted to enter a name for a group or aprogram, alpha-lock is set automatically.Ñ Pastes an X in Func mode, a T in Par mode, a in Pol mode,or an n in Seq mode with one keystroke.Display CursorsIn most cases, the appearance of the cursor indicates what will happenwhen you press the next key.Cursor Appearance Effect of next keystrokeEntry Solid rectangle A character is entered at the cursor;$ any existing character is overwritten.Insert Underline A character is inserted in front of the__cursor location.Second Up arrow A 2nd character (blue on the keyboard)} is entered or a 2nd operation is executed.Alpha Reverse A An alpha character (green on the keyboard)ÿis entered or SOLVE is executed.Full Checkerboard No entry; the maximum number ofrectangle # characters has been entered at a promptor memory is full.© Texas Instruments, 2007Using a TI-84 Plus Silver Edition MenuYou can access most TI-84 Plus Silver Edition operations using menus.When you press a key or key combination to display a menu, one ormore 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 seven items in that menu are displayed, beginning with item 1,which is also 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.■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 (...), selecting the item willdisplay a secondary menu or editor.Displaying a MenuWhile using your TI-84 Plus Silver Edition, you will oftenneed to access items from its menus. When you pressa key that displays a menu, that menu temporarilyreplaces the screen where you are working.Example: Calculate 5 + 9 31. 5 + 9 Enter the expression in the home screen2. Press ç3. Press 3 to choose the correct item from the menu4. Press Õ to calculateKeystrokes: 2T6 ç 0 Õ 734Moving Between MenusSome of the keys on your TI-84 Plus Silver Editionaccess more than one menu. When you press sucha key, the names of all accessible menus aredisplayed on the top line. When you highlight amenu name, the items in that menu are displayed.Press ~ and | to highlight each menu name.Setting ModesMode settings control how your TI-84 Plus Silver Edition displays andinterprets numbers and graphs. Mode settings are retained by theConstant Memory feature when you turn off your TI-84 Plus Silver Edition.All numbers, including elements of matrices and lists, are displayedaccording to the current mode settings.To display the mode settings on your TI-84 Plus Silver Edition, pressz . The current settings will be highlighted. Default settings arehighlighted below.Normal Sci Eng Numeric notationFloat 0123456789 Number of decimal placesRadian DegreeUnit of angle measureFunc Par Pol Seq Type of graphingConnected DotWhether to connect graph pointsSequential Simul Whether to plot simultaneouslyReal a+bi re i Real, rectangular complex, or polar complexFull Horiz G-TFull screen, two split-screen modesChanging Mode SettingsTo change mode settings:1 Press Ü or } to move the cursor to the line of the setting you want.2 Press ~ or | to move the cursor to the setting you want.3 Press Õ.education.ti.com
TI-84 Plus Silver Edition Expressions, Menus, and GraphingEntering Expressions and InstructionsWhat is an Expression?An expression is a group of numbers, variables, or functions andtheir arguments, or a combination of these elements. An expression1evaluates to a single answer. For example, ( ) 2 3is an expression. On theTI-84 Plus Silver Edition, you enter an expression in the same order asyou would write it on paper. You can enter anexpression on the home screen to calculatean answer.Entering an ExpressionTo create an expression, you enter numbers, variables, and functionsfrom the keyboard and menus on your TI-84 Plus Silver Edition. Anexpression is completed when you press Õ, regardless of thecursor location. The entire expression is evaluated according toEquation Operating System (EOS ) rules (see General Math page),and the answer is displayed. When an entry isexecuted on the home screen, the answer isdisplayed on the right side of the next line.The mode settings control the way the TI-84 Plus Silver Edition interpretsexpressions and displays answers. If an answer, such as a list or matrix,is too long to display entirely on one line, anellipsis (...) is displayed to the right or left.Press ~ or | to display the rest of the answer.To display the MATH menu, press çMATH NUM CPX PRB1: Frac Displays answer as a fraction2: Dec Displays answer as a decimal3: 3 Calculates cube4: 3 √ ( Calculates cube root5: x √ Calculates xth root6: fMin( Finds minimum of a function7: fMax( Finds maximum of a function8: nDeriv( Computes numeric derivative9: fnInt( Computes integral of a function0: Solver... Displays equation solverTo display the MATH NUM menu, press ç ~MATH NUM CPX PRB1: abs( Computes absolute value2: round( Rounds value to specified decimal place3: iPart( Calculates integer part4: fPart( Calculates fractional part5: int( Finds greatest integer less than or equal to number6: min( Finds minimum value7: max( Finds maximum value8: lcm( Calculates least common multiple9: gcd( Calculates greatest common divisorTo display the MATH PRB menu, press ç |MATH NUM CPX PRB1: rand Generates random number between 0 and 12: nPr Computes number of permutations3: nCr Computes number of combinations4: ! Calculates factorial5: randInt( Generates random integer in specified range6: randNorm( Generates random # from Normal distribution7: randBin( Generates random # from Binomial distributionDefining or Editing a Function for GraphingTo Define or Edit a Function1 Press o to display the Y= editor.2 Press Ü to move the cursor to thefunction you want to define or edit.To erase a function, press ë.3 Enter or edit an expression to definethe function.Displaying a New GraphTo display a graph of the selected function,press s. TRACE, ZOOM, and CALCoperations display the graph automatically.As the graph is plotted, the busy indicator ison, and the X and Y values are updated.Free-Moving CursorWhen you first display the graph, no cursor is visible. You must press|~}or Ü for the cursor to move from the center of the viewingwindow. Continue pressing | ~}or Ü to move the cursor around.Tracing a FunctionUse the TRACE operation to move the cursor from one plotted pointto the next along a function. To begin, press r. The TRACE cursoris on the first selected function in the Y= editor, centered horizontallyon the screen. The cursor coordinates are displayed at the bottom ofthe screen if CoordOn format is selected. The Y= expression is displayedin the top left corner of the screen if ExprOn format is selected.Moving the TRACE CursorTo move the TRACE cursorDo this:To the previous or next plotted point Press | or ~Five plotted points on a function Press y | or y ~(Xres affects this)To any valid X value on a function Enter a value & press ÕFrom one function to anotherPress } or ÜTo alter the viewing area of the graph, press qZOOM MEMORY1: ZBox Draws a box to define the viewing window2: Zoom In Magnifies the graph around the cursor3: Zoom Out Views more of a graph around the cursor4: ZDecimal Sets X and Y to 0.15: ZSquare Sets equal-size pixels on the X and Y axes6: ZStandard Sets the standard window variables7: ZTrig Sets the built-in trig window variables8: ZInteger Sets integer values on the X and Y axes9: ZoomStat Sets the values for current stat plots0: ZoomFit Fits Ymin and Ymax between Xmin and XmaxTo display the CALCULATE menu, press y /CALCULATE1: value Calculates a function Y value for a given X2: zero Finds a zero (x-intercept) of a function3: minimum Finds a minimum of a function4: maximum Finds a maximum of a function5: intersect Finds an intersection of two functions6: dy/dx Finds a numeric derivative of a function7: ∫f(x)dx Finds a numeric integral of a functionTo return to the Home Screen from any other screen, press y 5.© Texas Instruments, 2007education.ti.com
Page 1: Getting to Know Your TI-84 Plus Sil
Page 5 and 6: General Math with the TI-84 Plus Si
Page 7 and 8: More Algebra with the TI-84 Plus Si
Page 9 and 10: Trigonometry with the TI-84 Plus Si

TI 84+ Quick Reference

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