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2 PreWin
On selecting this sub-menu item, the window setup prior to the
current zoom setup will be recalled, and the graph will be redrawn
accordingly.
U:
Press this button to trace the graph drawn on the screen, to obtain
the X-Y coordinates:
1. While the graph is displayed,
2. Trace the graph using the
3. Pressing the U key again will redraw the graph, with the
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.
If the U key is not activated, the cursor will not be bound to
Note:
the graph. Pressing the ;, ', {, or } keys will
position the free-moving flashing cursor on the graph display.
4. Graph Modes
• This calculator has four graph modes (rectangular coordinate graph, parametric
coordinate graph, polar coordinate graph, and sequence graph):
• To select a mode, use the SETUP menu (E COORD).
Rectangular (X-Y)
coordinates
press the U key. The
cursor appears, flashing
on the graph line, with the
present X-Y coordinates.
; or ' keys. The ; key decreases the value of x,
while the ' key increases it.
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.
Parametric
Polar coordinates
coordinates
Chapter 4: Graphing Features
Sequence
coordinates
79
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