Using the plot application, Using the plot application -1, Plotting – HP 48g Graphing Calculator User Manual
Page 285
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22
Plotting
Using the PLOT Application
The PLOT application lets you draw graphs of one or more functions
in various formats, calculate roots and other parameters, plot
statistical data in various formats, and embellish plots with additional
elements.
The HP 48 can plot an equation, expression, or, for some plot types, a
program:
■ Equation.
An equation is an algebraic object containing == (for
example, qi+B=C').
■ Expression.
An expression is an algebraic object not containing ==
(for example, '
fl+B ‘
).
■ Program.
A program to be plotted must return one real number (or
a complex number for PARAMETRIC plots).
Throughout this chapter, unless otherwise stated, the term “equation”
refers to all objects used to create plots: equations, expressions,
programs, and lists of equations, expressions, and programs.
Plots are always drawn on the graphics object currently stored in the
reserved variable
PICT
. To view the “picture” currently stored in
PICT,
you may press
fj^fPICTURE).
To plot a single expression:
1. Press (S(EoD to open the PLOT application. You will the see
the main
F’LOT
screen showing the current plot type in
TYPE!
and
the current equation in
EQ!
(if any). (The three statistical plot
types (Scatter, Bar, and Histogram) use the
SDRT
! field instead of
the
EQ!.)
22
Plotting 22-1