Box; Circl; Label; Del - HP 48gII User Manual

Graphing calculator

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BOX

This command is used to draw a box in the graph.

Move the cursor to a

clear area of the graph, and press @BOX@. This highlights the cursor. Move the

cursor with the arrow keys to a point away, and in a diagonal direction, from

Press @BOX@ again.

the current cursor position.

A rectangle is drawn whose

diagonal joins the initial and ending cursor positions.

The initial position of

the box is still marked with and x. Moving the cursor to another position and

pressing @BOX@ will generate a new box containing the initial point. To deselect

BOX, move the cursor to the original point where BOX was activated, then

press @LINE @LINE.

This command produces a circle. Mark the center of the circle with a MARK

command, then move the cursor to a point that will be part of the periphery of

the circle, and press @CIRCL. To deactivate CIRCL, return the cursor to the

MARK position and press @LINE.

Try this command by moving the cursor to a clear part of the graph, press

@MARK. Move the cursor to another point, then press @CIRCL. A circle centered

at the MARK, and passing through the last point will be drawn.

Pressing @LABEL places the labels in the x- and y-axes of the current plot. This

feature has been used extensively through this chapter.

This command is used to remove parts of the graph between two MARK

positions. Move the cursor to a point in the graph, and press @MARK. Move

the cursor to a different point, press @MARK again. Then, press @@DEL@. The

section of the graph boxed between the two marks will be deleted.