User manual TERRAILLON TFX INFINY

[. . . ] See the terms of the license agreement for this product. TI-GRAPH LINK and TI-Cares are trademarks of Texas Instruments. All other trademarks are the property of their respective owners. TI-83 Plus Polynomial Root Finder / Simultaneous Equation Solver Application Page 2 What Is the Polynomial Root Finder & Simultaneous Equation Solver Application? The Polynomial Root Finder application calculates the roots (zeros) of polynomials of degree 1 through 30, with a convenient, easy to use interface. You can store solutions into lists, load lists into the application for editing, and graph the polynomial. [. . . ] Enter the number of equations (3) and the number of unknowns (3). Press ¯ after each entry. Tip You can press ` or h to move the cursor to an entry to change it. TI-83 Plus Polynomial Root Finder / Simultaneous Equation Solver Application Page 27 7. Enter the coefficients for the variables and the constants in the matrix: 1 M 500000   1 1 . 09 . 1 . 12 M 52000    2. 5 - 1 0 M 0    This matrix shows the values in Float mode. 8. Select SOLVE (press V) to solve the system of equations. You see that the corporation borrowed $100, 000 at 9%, $250, 000 at 10%, and $150, 000 at 12%. TI-83 Plus Polynomial Root Finder / Simultaneous Equation Solver Application Page 28 Now that you have completed the Getting Started example, you can read further for more detailed instructions on how to use the Simultaneous Equation Solver application. Some topics you might want to explore are • Loading a matrix into the application • Storing data to a matrix • Displaying a matrix in reduced row-echelon form TI-83 Plus Polynomial Root Finder / Simultaneous Equation Solver Application Page 29 Starting and Quitting the Simultaneous Equation Solver Application Starting the Application 1. Press n to display a list of applications on your calculator. The SIMULT EQN SOLVER main screen is displayed. From any screen, select MAIN to return to the main menu. Select Quit PolySmlt. Shortcut You can also press \  to exit the application. If the cursor is at a name prompt, you must press \  twice. TI-83 Plus Polynomial Root Finder / Simultaneous Equation Solver Application Page 30 Selecting Simultaneous Equation Solver Options Several options are that you can use to accomplish specific tasks displayed across the bottom of each screen. When you exit the application, your calculator's previous mode settings are restored. Note • If RAM is reset, the saved Polynomial Root Finder / Simultaneous Equation Solver mode settings will be lost. • Mode settings are stored in an application variable (AppVar). If you want to share the application and your mode settings with another TI83 Plus user, you must send both the application and the AppVar named APPVARO. • The mode settings cannot be changed from the RREF matrix screen. • If a matrix variable prompt (for example, STOsys MAT = ) is displayed, you must exit the prompt before you can change the mode settings. To change the mode settings: 1. Start the Simultaneous Equation Solver application. TI-83 Plus Polynomial Root Finder / Simultaneous Equation Solver Application Page 35 2. Press ] to display the PolySmlt MODE Settings screen. 3. Move the cursor to a setting and press ¯ to select the setting. Setting Normal Sci Eng Description Normal notation mode is the usual way to express numbers, with digits to the left and right of the decimal, as in 12345. 67. Sci (scientific) notation mode expresses numbers in two parts. The significant digits display with one digit to the left of the decimal. The appropriate power of 10 displays to the right of E, as in 1. 234567E4. [. . . ] 5 Polynomial Root Finder Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Getting Started with the Polynomial Root Finder Application. . . . . . . . . . . . . . . . . . . . 6 Starting and Quitting the Polynomial Root Finder Application. . . . . . . . . . . . . . . . . 13 Selecting Polynomial Root Finder Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]