
Lesson 21: Plotting a Function
A function takes one or more arguments as inputs and transforms
them inathematically 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:
► Ent.ering 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.r.
Step 1: Open the PLOT application. You may or may not already
have a function entered in EQ:.
iPLDT®
TYPE: Function
EC:
INDEP: K H-MIEW:-6.5 6.5
_flUTDiCflLE V-VIEH:-.3.1 3.2
ENTER FUNCTIDNtSJ TD PLOT
Step 2: Enter the function into the
CD iS^ (ENTER)
held.
PLOT*
TYPE: Function Deq
EO: 'STN(X>'
INDEP: EH H-VIEW:-6.5 6.5
_flUTOiCflLE V-VIEW:-3.1 3.2
ENTER INPEPENOEHL VlilR NOME
6-2 Plotting Equations and Analyzing Graphs
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