# Dot+ And Dot - HP F2226A - 48GII Graphic Calculator User Manual

Graphing calculator.

points, lines, circles, etc. on the graphics screen, as described below. To see
how to use these functions we will try the following exercise:
First, we get the graphics screen corresponding to the following instructions:
Press „ô, simultaneously if in RPN mode, to access to the PLOT
SETUP window.
Change
to
TYPE
Change EQ to 'X'
Make sure that Indep: is set to 'X' also
Press „ò, simultaneously if in RPN mode, to access the PLOT
window (in this case it will be called PLOT –POLAR window).
Change
the
10\@@@OK@@@ 10@@@OK@@@, and the V-VIEW range to -5 to 5 by
using 5\@@@OK@@@ 5@@@OK@@@.
Press @ERASE @DRAW to plot the function.
Press @EDIT L @LABEL to add labels to the graph. Press LL (or
„«) to recover the original EDIT menu.
Next, we illustrate the use of the different drawing functions on the resulting
graphics screen.
They require use of the cursor and the arrow keys
(š™—˜) to move the cursor about the graphics screen.

## DOT+ and DOT-

When DOT+ is selected, pixels will be activated wherever the cursor moves
leaving behind a trace of the cursor position.
opposite effect occurs, i.e., as you move the cursor, pixels will be deleted.
For example, use the ™— keys to move the cursor somewhere in the
middle of the first quadrant of the x-y plane, then press @DOT+@@. The label will
be selected (DOT+ @). Press and hold the ™ key to see a horizontal line being
Now, press @DOT-@, to select this option ( @DOT- @ ).
traced.
the š key to see the line you just traced being erased.
done, to deselect this option.
, if needed
Function
H-VIEW
range
to
–10
to
10,
by
When DOT- is selected, the
Press and hold
Press @DOT-, when
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using