[. . . ] The busy indicator on the status line displays while calculating the solution.
Note The roots x 1 . If the mode is Real, complex roots are displayed as Non-Real unless a complex coefficient was entered.
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Solving Graphically
1. After entering coefficients, press 2 ˆ (TI-89) or ˆ 1:Open Graph. This option is available from either the Coefficients or Solutions screen. [. . . ] − Zoom — Choose 1:ZoomRoots, 2:ZoomStd, 3:ZoomFit, or 4:none. ZoomRoots sets the viewing window based on the solutions found by the Polynomial Root Finder App, relative minimums and maximums, and inflection points. When the graph displays, the standard graph tools such as Zoom, Trace, and Math are available on the tool bar.
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Displaying graph with coefficients or solutions In split screen mode, a thick border indicates the active portion. Press 2 a to switch between the graph and the Coefficients or Solutions portion.
Graph portion is active
Coefficients portion is active
To display the Solutions screen with the graph, switch to the Coefficients portion of the split screen, and press ‡.
Solutions with graph
To return to the Coefficients screen, press † from the Solutions screen.
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While in split screen mode, you can change the coefficients and recalculate the solutions. To update the graph, select 2 ˆ (TI-89) or ˆ 1:Open Graph from the Coefficients or Solutions screen. Press 2 ˆ (TI-89) or ˆ 2:Quit Graph.
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Storing
Once you have entered the coefficients, you can store: • • • All the coefficients to a list. The polynomial to a Y= equation.
Once you have calculated the roots, you can store: • • All the roots to a list. An individual root to a variable.
To store from either the Coefficients or Solutions screen: • Press … and select one of the following: − 1:Coefficients and select a folder and list name. − 3:Poly to Y= Editor and select a y-variable.
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To store individual coefficients or roots from the Coefficients or Solutions screen: 1. On the Coefficients screen, place the cursor on the value you want to store. On the Solutions screen, place the cursor on the equal sign (=) of the xi value you want to store. A TI-GRAPH LINK™ computer-to-calculator cable, available for purchase from the TI Online Store. Either TI Connect™ software or TI-GRAPH LINK connectivity software for the TI-89 / TI-92 Plus. Download a free copy from education. ti. com/softwareupdates.
• • •
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Starting and Quitting the Application
Starting the Polynomial Root Finder App The instructions in this guidebook refer to this Flash application only. For help using this product, refer to the comprehensive guidebook at education. ti. com/guides. − Current returns to the screen you were on when you left the Polynomial Root Finder App. − Open lets you select an existing list to use as the coefficients of the polynomial. Quitting the Polynomial Root Finder App Press 2 K from any screen.
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Deleting an Application
Deleting an application removes it from the handheld device and increases space for other applications. Before deleting an application, consider storing it on a computer for reinstallation later. Press 2 ‰ (TI-89) or ‰ to display the list of installed applications. Press ¸ to delete the application.
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Texas Instruments (TI) Support and Service Information
For general information
E-mail: Phone:
ti-cares@ti. com 1-800-TI-CARES (1-800-842-2737) For US, Canada, Mexico, Puerto Rico, and Virgin Islands only education. ti. com
Home page:
For technical questions
Phone:
1-972-917-8324
For product (hardware) service
Customers in the US, Canada, Mexico, Puerto Rico, and Virgin Islands: Always contact TI Customer Support before
returning a product for service.
All other customers: Refer to the leaflet enclosed with your
product (hardware) or contact your local TI retailer/distributor.
TI-89 / TI-92 Plus / Voyage™ 200 PLT Polynomial Root Finder App
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TERRAILLON LICENSE AGREEMENT
BY INSTALLING THIS SOFTWARE YOU AGREE TO ABIDE BY THE FOLLOWING PROVISIONS.
1.
LICENSE: Texas Instruments Incorporated (“TI”) grants you a license to use and copy the software program(s) (“License Materials”) contained on this diskette/CD/web site. You, and any subsequent user, may only use the Licensed Materials on Texas Instruments calculator products. [. . . ] RESTRICTIONS: You may not reverse-assemble or reverse-compile the Licensed Materials. COPYRIGHT: The Licensed Materials and any accompanying documentation are copyrighted. If you make copies, do not delete the copyright notice, trademark, or protective notices from the copies. WARRANTY: TI does not warrant that the Licensed Materials or documentation will be free from errors or that they will meet your specific requirements. [. . . ]