HP 48G Series Quick Start Manual page 70

Lesson 21: Plotting a Function
A function takes one or more arguments as inputs and transforms
them mathematically into exactly one output. A function can be
plotted by graphing a series of outputs against a corresponding series
of inputs.
Plotting functions on the HP 48 is a matter of doing the following:
» Entering or choosing the function to plot.
» Declaring the independent variable and the horizontal range of
that you want to view.
» Either declaring the vertical range to be displayed or choosing to
let the HP 48 automatically scale it for you.
» Making sure that the angle mode (Degrees, Radians, Grads) is
properly set.
» Setting the other plot display options.
All of these steps can be accomplished smoothly and quickly in the
PLOT application.
Example: Plot f(x) = sin x.
Step 1: Open the PLOT application. You may or may not already
@®ron)
i sae PLOT
™PE: Function a
EQ:
INDEP: J H-VIEW: —6.3 6.3
_RAUTOECALE V¥-VIEW:=32.1 3.2
ENTER FUNCTION(E) TO PLOT
EDIT JCHODZ]|
Step 2: Enter the function into the Efi: field.
(GH) @X ENTER)
TYPE: Function < Deg
ER: 'SIHCKE)!
iNDEP: Gl] H-YIEW: —5.5 6.5
_AUTOSCALE ¥-vIEW:-2,1 3.2
ENTER INDEPENDENT VAR NAME
ECT] |[OPTS[ERAZE[DRAL]
6-2 Plotting Equations and Analyzing Graphs