HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Strona 391

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Choose the type of function you want to explore by tapping either or .
Graph mode
The app opens in graph mode. In graph mode, you manipulate a copy of the graph by pressing the cursor
keys. All four keys are available. The original graph—converted to dotted lines—remains in place for you to
easily see the result of your manipulations.
When is chosen, the cursor keys simply translate the graph horizontally and vertically. When
is chosen, pressing or changes the amplitude of the graph (that is, it is stretched or
shrunk vertically); and pressing or changes the frequency of the graph (that is, it is stretched or
shrunk horizontally).
The or button at the far right of the menu determines the increment by which the graph
moves with each press of a cursor key. By default, the increment is set at π/9 or 20°.
Equation mode
Tap to switch to equation mode. In equation mode, you use the cursor keys to move between
parameters in the equation and change their values. You can then observe the eect on the graph displayed.
Trig Explorer app 343
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