HP 48G Series Quick Start Manual page 74

Step 3: Enter the list of checked functions into the Efi: field and set
a vertical display range of -4 to 4 (large enough to display
the "largest" function in the list). You must turn off the
AUTOSCALE feature if it is currently checked before you
can see your %-% IEL. Because it uses only the first function
in the list to determine the vertical scale, autoscaling
while plotting a list of functions can give inconvenient and
SUTPTIsIng results and is generally not recommended.
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_AUTOSCALE Y-VIEW: —4 4
CHOOSE TYPE OF PLOT
[___[cHoo:] [OPTS [ERAZE[ORAL]
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(@ - (»), if necessary
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Example: Plot the list of functions you just selected. Plot them
simultaneously.
Step 1: Set the Simultaneous plot option.
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PLOT FUNCTIONS SIMULTAMEOUSLY?
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Step 2: Erase the PICTURE display and draw the plot.
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Return to the main PLOT screen by pressing when you've
finished viewing the plot.
You may plot as many functions simultaneously as memory allows—as
long as they are all gathered together in a list. You may either build
this list from a group of already-created variables (as in the previous
example) or enter the list from scratch using the command line.
6-6 Plotting Equations and Analyzing Graphs