HP Prime Graphing NW280AAABA manual Re-ordering, Entries, Hiding an object

N o t e Calculations referencing geometry variables can be made in the CAS or in the Numeric view of the Geometry app (explained below on page 150).

You can change the definition of an object by selecting it,

tapping , and altering one or more of its defining parameters. The object is modified accordingly in Plot view. For example, if you selected point GB in the illustration above,

tapped , changed one or both of the point’s

coordinates, and tapped , you would find, on returning to Plot view, a circle of a different size.

Creating objects You can also create an object in Symbolic view. Tap , define the object—for example, point(4,6)—and press E. The object is created and can be seen in Plot view.

Another example: to draw aline through points P and Q, enter line(GP,GQ) in Symbolic view and press E. When you return to Plot view, you will see a line passing through points P and Q.

The object-creation commands available in Symbolic view can be seen

by tapping . The syntax for each command is given in “Geometry functions and commands” on page 165.

Re-ordering	You can re-order the entries in Symbolic view. Objects are
entries	drawn in Plot view in the order in which they are defined in
	Symbolic view. To change the position of an entry, highlight it
	and tap either	(to move it down the list) or	(to
	move it up).
Hiding an object	To prevent an object displaying in Plot view, deselect it in
	Symbolic view:

1.Highlight the item to be hidden.

2.Tap .

Repeat the procedure to make the object visible again.

Geometry 149