7 change the window parameters as needed 8 press r to

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Unformatted text preview: Conic Graphing Page 14 6. Press S. 7. Change the window parameters as needed. 8. Press R to return to the previous screen. Graphing Mode Window Parameter Description All modes Xmin Smallest x value to be displayed in the viewing window Xmax Largest x value to be displayed in the viewing window Xscl Spacing between the tick marks on the x-axis Ymin Smallest y value to be displayed in the viewing window Ymax Largest y value to be displayed in the viewing window Yscl Spacing between the tick marks on the y-axis Tmin Smallest T value (step) to evaluate Parametric mode TI-83 Plus Conic Graphing Page 15 Graphing Mode Description Tmax Largest T value to evaluate Tstep Step increment Tmin Smallest T value (angle) to evaluate in radians/degrees Tmax Largest T value to evaluate in radians/degrees Tstep Polar mode (ellipse equations and circle equations 1 and 2) Window Parameter T increment in radians/degrees Conic Graphing allows you to graph a partial conic section. To do this, you must modify Tmin, Tmax, or Tstep (in parametric mode) or Tmin, Tmax, or Tstep (in polar mode, for the ellipse and circle equations 1 and 2 only). TI-83 Plus Conic Graphing Page 16 CONIC ZOOM The CONIC ZOOM settings screen allows you to adjust the viewing window of the graph quickly. This screen is similar to the calculator’s zoom settings screen. Zoom settings that do not apply to conic sections are not displayed. Zoom Conic is a new zoom setting that applies only to Conic Graphing. It changes the viewing window so that you can see the important characteristics of the conic section, regardless of the conic section’s position on the graph. The following table describes how Conic Graphing changes the calculator default variables, based on the zoom setting you choose. Note • You can only access the CONIC ZOOM screen after you have selected an equation to graph. • You can only access the CONIC ZOOM screen if the mode is set to MAN. TI-83 Plus Conic Graphing Page 17 Zoom Parameter Description Zoom Conic Changes the zoom parameters so that you can see the important characteristics of the conic section in the viewing window, regardless of conic section’s position on the graph. Also, changes the viewing window so that #X=#Y, which makes the graph of a circle look like a circle. (Otherwise, it would look like an ellipse.) Zoom In Magnifies the graph around the cursor. Zoom Out Views more of the graph around the cursor. ZBox Draws a box to define the viewing window. ZSquare Changes the viewing window based on the current window variables so that #X=#Y, which makes the graph of a circle look like a circle. (Otherwise, it would look like an ellipse.) The midpoint of the current graph (not the intersection of the axes) becomes the midpoint of the new graph. ZStandard TI-83 Plus Conic Graphing Sets the standard window variables: Xmin = 110, Xmax = 10, Ymin = 110, Ymax = 10. Page 18 To see how different zoom settings affect the graph: 1. Make sure that the conic mode is set correctly (to function, parametric, or polar, depending on what the e...
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This document was uploaded on 12/31/2013.

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