SAMPLE. Appendix: TI-Nspire. Keystroke actions and short cuts

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1 Appendix: TI-Nspire Keystroke actions and short cuts : removes menus and dialogue boxes + : undo last move + : redo last move : move to next entry box (field) + : switch applications in split screen : accesses secondary (blue) commands + : displays page sorter + : displays previous page + : displays next page : shift key : display lists of stored variables + : store command ( ) Home page (icon display) : displays icon page to select applications, mode, My Documents and start a new document : options for each application + : contextual menus (same as right mouse click) : backspace deletes a character + : clear clears an entry line : mouse pointer (cursor), selects items + : grab + : degree sign ( ) + : fraction template : completes commands and displays results 497

2 498 Essential Further Mathematics Setting the Mode For General Mathematics it is convenient to set the calculation mode to Degree and Approximate (decimal) right from the start. The calculator will remain in this mode unless you change the settings again. 1 Press to turn on the calculator and then press c/8:system Info/2:System Settings. Hint: If the icon page does not display when you press c, then press first. 2 Use the keytomovedowntothe box that displays Angle. Use the to select Degree, press enter. Continue using the key until you reach the Auto or Approx.box.Use the to select Approximate, then press enter. 3 Press the key until you reach the OK box and press enter. Press enter again to accept the change to the settings.

3 Starting a new document When first starting a problem or calculation on the TI-Nspire CAS it is often best to create a new document. 1 To start a new document, press c and select 6:New Document (or use the shortcut to start a new document, which is / + N). 2 If prompted to save an existing document move the cursor to No and press enter. Calculating Calculations on the TI-Nspire CAS are done mostly in the Calculator application. 1 To open the Calculator application, press 1:Add Calculator. Hint: If you make a mistake you can undo your action using / + (or / + ). Note: When you use the TI-Nspire CAS you will see the mode settings displayed on the top of each screen. It should read DEG APPRX REAL after you have made the Mode changes above. 2 To calculate, simply enter the required expression and press enter.for example, if we wish to evaluate , we type in the expression and press enter. Note: The symbol (dot) is used on the screen to represent the multiplication sign. 3 Type in 56 6 and press enter to obtain the result If the result is displayed as 56,youare in Exact not Approximate mode. 6 Change the mode now (see above). Appendix: TI-nspire 499

4 500 Essential Further Mathematics 4 To copy and edit a previously evaluated line, keep pressing until the expression to be copied is highlighted, then press enter to paste it on a new line. You are now able to edit this expression as required. Note: You can edit only on a new line; that is, if no answer is present on that line. 5 You can enter fractions using the fraction template if you prefer. Press / + to paste the fraction template and enter the values. Use the keytomove between boxes. Press enter to display the answer. Solving equations Using the Solve command Solve 2y + 3 = 7 for y. 1 Open a new document if necessary (by pressing / + N) and select 1:Add Calculator. 2 Press b/3:algebra/1:solve and complete as shown opposite. Keystrokes: 2 7 enter Hint: You can also type in solve( directly from the keypad but make sure you include the opening bracket.

5 Clearing the history area Once you have pressed enter the computation becomes part of the History Area. To clear a line from the history area, press repeatedly until the expression is highlighted and press.tocompletely clear the history area, press b/1:actions/ 5:Clear History. Hint: Rather than completely clearing the history area it is generally easier to add a fresh page c/1:calculator or start a new document by pressing c and select 6:New Document (or / + N), as described earlier. Appendix: TI-nspire 501