HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Pobierz pdf (Strona 218)

100

101

Deleting a calculation

1. Highlight the calculation you want to delete.

Press .

To delete all calculations, press . Note that deleting a calculation does not delete any

geometric objects from either the Plot or Symbolic view.

Plot view: Cmds menu

The geometric objects discussed in this section are those that can be created in either Plot view or Symbolic

view using the Commands menu ( ). This section discusses how to use the commands in Plot view.

Objects can also be created in Symbolic view—more, in fact, than in Plot view—but these are discussed in

Geometry functions and commands on page 189. Finally, measurements and other calculations can be

performed in Plot view as well.

In Plot view, you choose a drawing tool to draw an object. The tools are listed in this section. Note that once

you select a drawing tool, it remains selected until you deselect it. This enables you to quickly draw a number

of objects of the same type (such as a number of circles). To deselect the current drawing tool, press .

You can tell if a drawing tool is still active by the presence of the on-screen help in the bottom left-side of the

screen and the current command statement to its right.

The steps provided in this section are based on touch entry. For example, to add a point, the steps will tell you

to tap the screen where you want the point to be and press . However, you can also use the

cursor keys to position the cursor where you want the point to be and then press

The drawing tools for the geometric objects listed in this section can be selected from the Commands menu

at the bottom of the screen ( ). Some objects can also be entered using a keyboard shortcut. For

example, you can select the triangle drawing tool by pressing

. See Plot view: buttons and keys

on page 161.

Point

Tap where you want the point to be and press .

Keyboard shortcut:

Point On

Tap the object where you want the new point to be and press . If you select a point that has been

placed on an object and then move that point, the point will be constrained to the object on which it was

placed. For example, a point placed on a circle will remain on that circle regardless of how you move the point.

170 Chapter 9 Geometry

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