HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Strona 212

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X Rng: There are two boxes, but only the minimum x-value is editable. The maximum x-value is
calculated automatically, based on the minimum value and the pixel size. You can also change the x
range by panning and zooming in Plot view.
Y Rng: There are two boxes, but only the minimum y-value is editable. The maximum y-value is
calculated automatically, based on the minimum value and the pixel size. You can also change the y
range by panning and zooming in Plot view.
Pixel Size: Each pixel in the Plot view must be square. You can change the size of each pixel. The lower
left corner of the Plot view display remains the same, but the upper right-corner coordinates are
automatically recalculated.
Axes: A toggle option to hide (or show) the axes in Plot view.
Keyboard shortcut:
Labels: A toggle option to hide (or show) the labels for the axes.
Grid Dots: A toggle option to hide (or show) the grid dots.
Grid Lines: A toggle option to hide (or show) the grid lines.
Symbolic view in detail
Every object—whether a point, segment, line, polygon, or curve—is given a name, and its denition is
displayed in Symbolic view (
). The name is the name for it you see in Plot view, but prexed by “G”.
Thus a point labeled A in Plot view is given the name GA in Symbolic view.
The G-prexed name is a variable that can be read by the computer algebra system (CAS). Thus in the CAS you
can include such variables in calculations. Note in the illustration above that GC is the name of the variable
that represents a circle drawn in Plot view. If you are working in the CAS and wanted to know what the area of
that circle is, you could enter area(GC) and press .
NOTE: Calculations referencing geometry variables can be made in the CAS or in the Numeric view of the
Geometry app (explained below on Numeric view in detail on page 166).
You can change the denition of an object by selecting it, tapping , and altering one or more of its
dening parameters. The object is modied accordingly in Plot view. For example, if you selected point GB in
164 Chapter 9 Geometry
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