Appendix B.pdf - Cambridge University Press

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710 Essential Mathematical Methods 3&4CASIn the Edit line enter y1(x) = x ∧ 2 and press ENTER again.The result now appears in ‘pretty print’ format. Note the tickto the left. This indicates that the function is selected and willbe graphed when and then F3 is pressed.Menus F2, F5 and F6 contain features similar to the TI graphing calculators. These arereproduced here.The F6 menu enables the user to change the style of thegraph. To change the style the cursor needs to be placed onthe required function as shown. Remember, to obtain theF6 menu press 2nd F1 .The user can experiment to find the use of each of themenu items. To close the menu, and return to the Y= screen,press ESC .The F5 menu enables the Y= screen to be set.The F2 menu has the same zoom features as the TI-83 with the addition of itemsB:Memory and C:SetFactors.B:Memory allows a window setting to be stored and recalled. From the F2 ZOOM menuchoose B:Memory.The choices in this memory are:1: ZoomPrev This returns to the viewing window displayed before the previous zoom.2: ZoomSto This saves the current viewing window.3: ZoomRcl This recalls the viewing window last stored with ZoomSto.The screen on the right below is the ZOOM FACTORS screen. These are altered by firstusing the keys and to highlight the change to be made and then by typing in therequired value.SAMPLEThe WINDOW screenThe WINDOW screen is very similar to that of the TI-83. The screen to the left below showsthe standard settings. By pressing F1 and 9 the GRAPH FORMATS screen can be obtained.Cambridge University Press • Uncorrected Sample Pages •2008 © Evans, Lipson, Jones, Avery, TI-Nspire & Casio ClassPad material prepared in collaboration with Jan Honnens & David Hibbard
Appendix B—Computer Algebra System (TI calculators) 711B4This is also obtainable through the Y= screen and the GRAPH screen through the sameprocedure.The GRAPH screenIn the Y= screen enter y = 2x − 4. The WINDOW screenhas the settings as shown and TRACE (F3) has been activated.The MATH (F5) menu contains options. These include9:Distance, A:Tangent, and C:Shade. Some of these willbe discussed in a later section.Defining functionsExpressions can be stored in memory locations. For example x 2 − 3x → p stores theexpression x 2 − 3x in memory location p. This can be operated on using the functionsdiscussed previously. Make sure that memory location x has been cleared first.SAMPLEFunctions can be defined in terms of a variable through using store or the define command,which is found by pressing F4 (to obtain F4 Other menu) and selecting 1:Define. Inthefollowing, two functions are defined and then operations from theAlgebra and Calculus menus are applied. It is often efficient todefine functions at the beginning of a problem.Functions can be defined in terms of a variable and arbitraryconstants. This is shown in the screen opposite and the methodof assigning values is also shown.Cambridge University Press • Uncorrected Sample Pages •2008 © Evans, Lipson, Jones, Avery, TI-Nspire & Casio ClassPad material prepared in collaboration with Jan Honnens & David Hibbard
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Appendix B.pdf - Cambridge University Press

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