HP 38g Graphing Calculator - Manual (Page 72)

Undefined If, during plotting, a real value for the expression is not found,
Points then that point is not plotted, and no line is connected
through it.
Tracing a Plot When a graph is nev/ly drawn, TRACE mode is on. Pressing a
cursor key will trace the crosshairs along the graph, displaying
the coordinate values as they move.
Scrolling a Plot In Function and Sequence aplets, you can scroll left and right
beyond the edge of the window to see more of the graph.
Zooming Press I PLOT [{{ZOOM}} for a choice of zooming options. To
switch to a predefined axis scaling (such as Trig or Integer),
press ■ [VIEWS].
Examples: Plotting
Function Plot the expression from the previous Function example,
Example x' - 2x + 3 . In Plot Setup, specify YRNG ; - 3 . 1 5 so
that you can see more of the graph (the default values are
-3.1 and 3.2). You can leave the other plot settings at their
default values.
( O b I Select Function
{{START}}
Make sure the correct function
is highlighted and checked.
■ {SETUP-PLOT}
ryjfFlSfwriRl
1^*
FUNCTION PLOT SETUPS*
HRNG: -6.5 6.5
VfiNQ: -3.1 5
«TICK: 1 VTICK: 1
fiES: Faster
ENTER HDRiZDNTAL TICK iPACIMS
mm\
I PLOT I
{F} 6 times
(The cursor starts in the
center of the X -range and
traces the plot.)
, ,
j
J
/
« : . 6 FlC« i : E.OIS liil:t!lll
3-8 Plotting and Exploring Fnnctions