HP 40gs HP 39gs_40gs_Mastering The Graphing Calculator_English_E_F2224-90010.p - Page 85
The VIEWS menu, key normally pops up the menu on the right. We
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10 THE VIEWS MENU In addition to the views of PLOT, SYMB and NUM (together with their SETUP views), there is another key which we have so far only used very fleetingly - the VIEWS key. It may seem odd to devote an entire chapter to what might appear to be an inconsequential key. In fact, however, this button is very useful to the effective use of the calculator, and crucial if you intend to use aplets downloaded from the internet. The contents of the VIEWS menu changes slightly according to which aplet you are currently using. The Function aplet contents are covered here but the others differ in only small ways. Aplets downloaded from the Internet, however, will usually have a radically different VIEWS menus created by the person who wrote the program for the aplet. See page 257 for more information on this process if you intend to program the calculator. The first image shown right shows the contents of the VIEWS menu for an aplet called "Coin Toss" which investigates probability. The VIEWS key normally pops up the menu on the right. We have already seen the use of the Auto Scale option (see page 89) and this is probably the one most used. The other options are also very useful at times. Shown on the right is the graph of F1( X ) = X 2 −1 . If we press the VIEWS key, the menu above will pop up. On the pages following we will investigate each of the menu options in detail. 85
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