HP 39gs Master Manual page 63

Change into the view and scroll through the window from zero to
NUM
100. As you do so, take note of the values that the function takes. From
the display it seems that the function peaks around y=30 and then
declines steadily.
Change into the
PLOT SETUP
with a 'tick' value of 20, and a y axis of -10 to 35 with a tick value
of 5.
The result of this is a
PLOT
answering questions on the domain stated.
Another possible strategy for graphing which works quite well
and, perhaps importantly, always gives 'nice' scales is to use
Enter your graphs into the
works on the first ticked graph.
Press and choose Decimal, or press
VIEWS
view. This will give you the default axes, probably not
PLOT SETUP
showing the graph very well.
Place the cursor so that it is in the center of the area you are most
interested in.
Use the menu to adjust the view. You
may choose first to change the zoom factors
to something other than 4x4, and to ensure
that Recenter is
on the right is the result of setting 2x2 and re-
center.
view and enter an x axis of 0 to 100
view as shown right. This would be ideal for
view. Remember that Auto Scale only
SYMB
SHIFT CLEAR
ed. The view
PLOT
.
in the
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