Sharp EL-9450, Руководство по эксплуатации

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Chapter 4: Graphing Features
U
: Press this button to trace the graph drawn on the screen, to
obtain the X-Y coordinates:
1. While the graph is displayed, press
the
U
key. The cursor appears,
flashing on the graph line, with the
present X-Y coordinates.
2. Trace the graph using the
;
or
'
keys. The
;
key de-
creases the value of x, while the
'
key increases it.
3. Pressing the
U
key again will redraw the graph, with the
cursor at the center of the screen. If the cursor is moved
beyond the range of the screen, pressing the
U
key will
redraw the screen centered around the cursor.
4. When done, press the
C
key to escape the tracing
function.
If more than one graph is displayed on the screen, use the
{
or
}
keys to switch the cursor from one graph to the other.
Note: • If the
U
key is not activated, the cursor will not be bound to
the graph. Pressing the
;
,
'
,
{
, or
}
keys
will position the free-moving flashing cursor on the graph
display.
• Under the tracing mode in the parametric coordinate graph, the
T value will also be displayed.
W
: Displays the graph window setup.
Rectangular coordinate system
Xmin/Xmax Minimum and maximum
values of x-axis, respectively
Xscale
Scale of x-axis
Ymin/Ymax Minimum and maximum
values of y-axis, respectively
Yscale
Scale of y-axis