Texas Instruments TINSPIRECX manual Editing, Deleting or Hiding a Function

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First Steps with TI-Nspire™

Tutorial 4: Graphing

You have just used a direct method for changing the axes, but there are a number of other ways to do this. Press b4 and you will see this Window sub-menu. Option 1 allows you to enter numerical values to determine the extremes of the axes, while the Zoom options, as on the TI-83 and TI-84, provide automatic rescaling.

It is worth mentioning one final very useful way of changing the position of the axes, but without rescaling them. Move the arrow cursor to an empty part of the screen and grab the vacant space. An appropriate icon appears (ù) indicating that you are grabbing the whole working area. Now you can use the Touchpad to reposition the axes as you wish.

Reset the axes using the (default) Zoom-Standardoption from the Window menu before continuing.

The Zoom settings

The grabbed-sheet icon

	Editing, Deleting or Hiding a Function
	Suppose you wish to make f2(x)=x+8. As well as changing g(x)
	in the Calculator application on page 1.1, you can make the
	change in two ways on this page.
	• In the work area, move the pointer to the label,
	f2(x)=g(x) and, instead of grabbing it, double-click on
	the label and an editable box opens up. Change the
	definition and press · to update it.
	• Press ee· to highlight the function history area
	and scroll up to edit f2.
	Functions may be deleted in similar ways, by simply deleting	Changing f2 in the function history
	their definition and pressing ·.	Changing f2 in the function history
	their definition and pressing ·.

To hide a function’s graph click on the Hide/Show button ú

© 2012 Texas Instruments Education Technology

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Contents First Steps About this document Contents Appendix TI-Nspire CX Keypad Layout Memory TI-Nspire DocumentsNothing on the screen? Charging the handheld Battery LifeHome Screen First Steps with TI-Nspire Tutorial 1 TI-Nspire documents Scratchpad Documents, Problems and PagesNavigating Documents First Steps with TI-Nspire Tutorial 1 TI-Nspire documents Contextual Menus Check list of some key points in Tutorial Basic operations Calculator ApplicationApproximate Calculations History LessonMenu of maths templates TemplatesGetting Set Document settings dialog boxEffect of changed settings Use of function notation Some AlgebraWays to define variables Lists of random integers Calculator MenuStatistical Distribution Tables List of defined variables Variables Linked to DocumentsVarious text formatting Instructions Recording results Why use Notes?Making Notes Ways to split the screen You must press /e and then b Splitting the ScreenFormat sub-menu More Options from the Notes Menu An inserted comment Use of proof template and symbolsInteractive Notes Use of Q+A templateAsking Questions Check list of some key points in Tutorial Graphs & Geometry Two Views GraphingGraphing Functions Graphing ViewChanging the Axes Grab and Drag PracticeOpen-hand cursor Grabbed tick mark on the axesChanging f2 in the function history Zoom settings Grabbed-sheet iconEditing, Deleting or Hiding a Function Points and coordinates Tracing GraphsTrace picks out significant points Points of intersectionCoordinates and labelled points Analyse Graph MenuAlternative icons Transformed graph and equation Using SlidersManually Moving Graphs Sequence Plotting Check list of some key points in Tutorial View for Plane Geometry GeometryTwo Parallel Lines Drawing the base of the triangleMany options in the Construction menu What’s grabbable?Construct the Triangle Variables and Text Making MeasurementsMeasurement menu Storing the measurement as a variableDynamic Changes Tidying Up and Using AttributesReady to grab a and slide it Changing the attributes of the triangleUnlocked/Unpinned Points B and C. Try Moving point B Area is now lockedCheck list of some key points in Tutorial Entering Data as Lists Lists & SpreadsheetOne way to enter a formula Typical Spreadsheet Actions Using FormulaeConflict resolution Hand-made function table Capturing DataFunction Tables Graph and table side by side Simple function table Options for function tablesFrequency Charts Shoe Sizes and Hand Spans Charts with One VariableOne and Two Variable Statistics Pie Chart displaying categorical data Charts for Categorical DataComparing Boxplots Upper quartile displayedReady to add a 2nd variable Charts with Two VariablesFitting a Line by Hand and Eye Calculated regression line Statistics Calculations menu Drawing the Regression LineGetting the Stats Working with Frequency Data Dragging on the ChartsSets of statistics Effect of moving a point from here … … to hereTexas Instruments Education Technology Check list of some key points in Tutorial Measured circle Multiple RepresentationsDraw and Measure a Circle Spreadsheet for Data Capture Setting up a scatter plot Data capture is under wayTwo Scatterplots Collecting Just a Little DataFit a Straight Line Go to Town with Data CollectionLinear relationship Moving a straight line by hand Not a linear relationshipBasic quadratic ready for fitting… … and dragged into place Different Approach to ScatterplotsRegression